18 Best Engine Diagnostic Tool of 2022 – Romance University

After hours researching and comparing all models on the market, Romance University finds out Top 18 Best Engine Diagnostic Tool of 2022. Check our ranking below.

2,774 Reviews Scanned

Rank No. #1

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.
Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. This is not the case with the AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing.
Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.

Rank No. #2

OBD2 Scanner Diagnostic Tool, Check Engine Code Reader OBD2 Scanner with Reset, Mode 6, Mode 8 & I/M Readiness, Auto Check Engine Light Car Diagnostic Scan Tool for All OBDII Car Since 1996

Professional OBD2 Scanner Diagnostic Tool with Powerful Functions: OBD2 scanner code reader feature built-in 35901 OBD2 DTCs lookup library, As professional car scanner, the obd2 scanner diagnostic tool will help you to determine the cause of the engine light, read I/M readiness, Read & clear codes, turn off engine light or MIL, view freeze frame, retrieve vehicle VIN, battery voltage test, live data stream,O2 sensor test, onboard monitoring mode, and perform component testing etc
OBD2 Scanner Built-in 35,901 DTC Lookup: The OBD2 scanner car code reader built-in 35,901 DTCs, other obd2 scanner diagnostic tool usually only have 3,000-10,000.the OBD2 Scanner of DTC library covers tens of thousands detailed fault code definitions that will quickly determine the fault cause and the potential problems before they cost you a fortune.you don't need to google the meaning of each fault code.If you are looking to replace a car code reader, this code reader is an excellent option
OBD2 Diagnostic Scanner Tool Compatible with 98% Vehicles And 10 Languages: The code reader OBD2 scanner for cars is designed to be compatible with most vehicles manufactured after 1996 US-Based, 2000 EU-Based and Asian cars. If your car has a 16-pin OBD2 port and was produced within the specified timeline, it should be compatible with the code reader and the obd2 scanner diagnostic tool support languages: English, French, Spanish, German, Russian, Italian, Portuguese, Dutch, Japanese, Chinese
Car Scanner Diagnostic offers Convenient Data Printing: The code reader for car offers advanced features such as live data and DTC replay combined with printing function, Connect the OBD2 scanner to your computer to easily print fault data, empowering you to prevent random charges at car repair shops and save valuable time and money. Additionally, WEJOWE offer lifetime free upgrades for the device, ensuring you always have access to the latest features and improvements
Super Compact & User-Friendly Design: The OBD2 scanner tool is easy to carrying and storage. 2.8" TFT true color LCD display offers a super clear viewing of test results. No need any extra battery or charger, plug this scanner into the OBD2 interface of your vehicle to power it on

SaleRank No. #3

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

Multi-Functions - It's a practical multi-function OBD2 code reader which helps you determine the cause of the check engine light coming on, quickly read and remove diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself. Wide Compatibility - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing. It can also be used for some motorcycle OBD2 system diagnosis. (Note: an additional specific adapter cable is needed. not included with this device) 2.8" LCD Display & Multi-language - Designed with a clear 2.8" LCD screen (128 x 64 pixels) - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector. It also supports 6 languages - English,German, Dutch, Spanish, French and Italian. This scanner is enjoyed and highly recommended by the customers worldwide. Compact Design & Easy to Use - It weighs about 12 ounces and measures 6 x 2.75 x 0.9 inches. Equiped with a 2.5 feet long heavy duty cable and the standard 16-PIN OBD connector. 6 buttons for quick operation. The plug and play design makes it user-friendly. Even if you don't have much technical knowledge, you can operate it without any hassle. "Accurate & Fast - Different with other similar scanners, the MP69033 scanner use the brand new ARM micro processor to make sure the ultra high accuracy and fast speed. With the excellent performance of the micro processor, the detailed real-time engine data can be detected and displayed on the screen in seconds. Get codes, fix the problem and turn off the CEL. If you just need a code reader to check your car, it's definitely an affordable and reliable tool.

SaleRank No. #4

BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android - No Subscription Fee - OBD2 Car Scanner and Code Reader - Diagnose Check Engine, ABS, SRS, Airbag & 7000+ Issues on Vehicles 1996+

[Pro OBD2 Scanner] - BlueDriver is the easiest way to scan and understand your vehicle like a professional mechanic. Read and clear your car’s trouble codes and check engine light.
[Read & Clear All The Codes] - BlueDriver's enhanced vehicle diagnostics gives you access to information normally available only to mechanics on their OBD2 scan tools. Now you can read and clear ABS, Airbag, SRS, TPMS codes, and many more.
[Get The Right Fix & View Live Data] - Much more than a car code reader, BlueDriver is a diagnostic tool. You’ll get unlimited repair reports with possible causes and fixes, plus real-time health monitoring while you drive with the live data feature.
[Wireless & Bluetooth Enabled] - Say goodbye to wires. BlueDriver connects with Bluetooth via your phone/tablet to a sensor that plugs into your car's OBDII port. Get all of the capabilities of an expensive code reader & scan tool without any annoying wires.
[User-Friendly App and Repair Videos] - BlueDriver gives you more ways to scan and fix your vehicle. Our iOS & Android app connects you to a large database of repair videos with step-by-step directions of repairs.

SaleRank No. #5

FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

[Vehicle CEL Doctor] The NT301 obd2 scanner enables you to read DTCs, access to I/M readiness status, figure out the root reason of check engine light or MIL turned on, monitor sensors test, read live data and retrieve VIN of your vehicle. The fault code only can be cleared after repair finished by NT301, as like all the obd2 code readers' working principle
[Accuracy & Streams] Live data graphing and logging. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels equipped with Obd2. Graphing live vehicle sensors data allows you to focus on any suspicious data and trend.
[Worthy to Own] Recommended by most professional mechanics on Youtube. Codes analysis and Printer compatible. Unique PATENTED design, 2.8" color screen and 1-year seller assurance with EXCLUSIVE tech and service team. Plug & Play, no need to update before using. Available to windows system. NOT support ios and Mac
[S-mog Check Helper] Read/Erase and I/M readiness hotkeys make it easy to use the car computer reader right out of the package. Red-Yellow-Green Leds and build-in speaker indicate the readiness status for confident e-missions test
[Home Necessity] Open to global customers. No battery required, NT301 obd scanner is charged directly from the 16pin DLC in your vehicle. It is recommended as a necessity in your toolbox and great choice for Home and Autoshop Mechanics. This scanner for car only supports to read the fault code of engine system, not support ABS or SRS

Rank No. #6

ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow

WIDE COMPATIBILITY – Trusted by YouTube Star Scotty Kilmer. The AD410 OBD2 Scanner supports all 16PIN vehicles that comply with the OBDII protocol, including KWP2000, ISO9141, J1850 VPW, J1850 PWM, and CAN. This OBD2 code scanner compatible with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles. Multilingual support (English, German, French, Spanish, etc.), this car code reader is ideal for international users. Check compatibility with your vehicle model before purchasing. !!! Powered directly from your vehicle's OBDII connector, this diagnostic tool doesn' t need a battery or charger.
CRITICAL FUNCTIONALITY – Quickly Read & Clear Fault Codes. The AD410 obd2 scanner diagnostic tool quickly reads and clears stored emissions-related codes, pending codes, and provides code definitions. With over 42,000 built-in DTC lookups, you can easily identify faults without the need for Google searches. Reset the MIL, check monitor readiness before smog tests, and understand your vehicle's health before costly repairs. !!! Note: Fault codes can be cleared after resolving the underlying issue, the code reader itself does not have a reset function.
ENHANCED OBDII DIAGNOSTICS – Comprehensive System Testing. This engine obd2 scanner diagnostic tool offers advanced diagnostics, including testing of O2 sensors and EVAP systems. Perform a leak test on your vehicle's EVAP system and monitor the fuel tank's integrity. The O2 sensor test helps fine-tune the air/fuel mixture, improving fuel efficiency and reducing emissions—saving you money at the pump and reducing your car's environmental impact. !!! Note: The AD410 is only an engine code reader, it DOESN'T support other systems such as ABS, SRS, Transmission and others.
QVGA DISPLAY & NEW UI – Easy-to-Use, User-Friendly Interface. The AD410 scanner for car boasts a 2.4 TFT true-color LCD display (262K) for clear, easy-to-read results. With an intuitive UI design, you can quickly access OBDII diagnostics, I/M readiness checks, DTC search, and setup options. No need to read a manual—this user-friendly auto diagnostic code scanner is perfect for beginners, mechanic and seasoned users alike.
DIAGNOSTIC REPORTS & FREE LIFETIME UPDATES. The AD410 car scanner reader allows you to review, save, or print detailed diagnostic trouble code reports. Plus, with lifetime free software updates, you’ll always have the latest features and bug fixes. Simply download the updates from the ANCEL website and follow the easy on-screen installation instructions. (Note: update is not necessary, the AD410 code reader can be directly inserted into the OBDII interface of the car to use, if it doesn't work, then consider updating the device.) The ANCEL website provides the latest product user manual, which can be downloaded and viewed at any time.

SaleRank No. #7

FIXD Bluetooth OBD2 Scanner for Car - Car Code Readers & Scan Tools for iPhone & Android - Wireless OBD2 Auto Diagnostic Tool to Check Engine & Fix All Cars & Vehicles ‘96 or Newer (1 Pack)

Powerful Check Engine Light Diagnostics — Read and diagnose your check engine light, understand the severity of the issue, and clear that pesky light from your vehicle. FIXD translates your vehicle into simple English, empowering you to make the easy fix in many cases & saving you precious time. FIXD also saves you money by providing you with estimated repair costs up-front, allowing you to feel more confident during those trips to the mechanic
The Trusted Choice — FIXD is the professional choice proudly designed in the USA by Professional Engineers and ASE Certified Mechanics. Get unlimited access to over 10,000 manufacturer specific and enhanced trouble codes (ABS, Airbag, TPMS, and Transmission*). With the App, you'll have freeze frame data, live diagnostic data, and proactive vehicle maintenance reminders at your fingertips. All the capabilities of an expensive Scan Tool at a fraction of the cost
Easy & Intuitive — The powerful FIXD OBD-II Diagnostic Sensor and the professionally designed FIXD App are the perfect pair. The FIXD Code Reader is light & compact, remaining out-of-sight during your drive. The FIXD Sensor connects to the FIXD App via Bluetooth in seconds, providing you with a suite of resources easy enough for anyone to use
We've Got You Covered — The FIXD OBD 2 Scan Tool is compatible with all gas-powered vehicles made after 1996 (no all-electric or diesel) and works with all vehicle protocols. Works with iPhone, iPad, and Android devices
Go further with FIXD Premium— Upgrade your in-app experience with: Cost and repair estimates from the Identifix database, Unlimited calls to our FIXD Mechanic Hotline for a trusted second opinion and DIY help from our network of ASE certified mechanics, And much more! FIXD Premium is a monthly subscription that is optional and is not required for use of the sensor

Rank No. #8

FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission, Check Engine Code Reader for Cars and Trucks, Diagnostic Scan Tool with SRS Airbag, Automotive Diagnostic Tool with Live Data

[Easy to Use--Work out of box] + [FOXWELL 2025 New Version] FOXWELL NT604 Elite scan tool is the 2025 new version from FOXWELL, which is designed for those car owners who want to figure out the cause issue before fixing the car problem via scanning the most common systems like abs srs engine and transmission.The NT604 Elite diagnostic tool comes with latest software, which can be used out of box. No need to waste time to download the software first.
[Affordable] + [Reliable Car Health Monitor] Will you be confused what happen when the warning light of abs/srs/transmission/check engine flashes? Instead of taking your cars to dealership, this foxwell scanner will help you do a thorough scanning and detection for your cars and pinpoint the root cause. It will t-urn off the warning light car after the problem is fixed.👉TIPS: Airbag crash/collision data can NOT be cleared even you replace the new airbag.
[5 in 1 Diagnostic Scanner] Compared with those auto scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also it can be an abs/srs scanner, transmission and check engine code reader. When it’s an odb2 scanner, you can use it to check if your car is ready for annual test through I/M readiness menu. In addition, live data stream, built-in DTC library, data play back and print, all these features are a big plus for it. Note: doesn't support maintenance function.
[Fantastic AUTOVIN] + [No extra software fee] Through the AUTOVIN menu, this NT604 Elite car scanner allows you to get your V-IN and vehicle info rapidly, no need to take time to find your V-IN and input one by one. What's more, the NT604 Elite abs srs scanner supports 60+ car makes from worldwide (America/Asia/Europe). You don’t need to pay extra software fee.
[Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level obd scanner diagnostic tool only offers plastic bag to hold on the scanner.However, NT604 Elite automotive scanner is equipped with solid protective case, preventing your obd2 scanner from damage. Then you don’t need to pay extra money to buy a solid toolbox.

SaleRank No. #9

ZMOON ZM201 Professional OBD2 Scanner Diagnostic Tool, Enhanced Check Engine Code Reader with Reset OBDII/EOBD Car Diagnostic Scan Tools for All Vehicles After 1996, 2025 Upgraded

Full OBDII Modes Scanner for Car: As professional car scanner, ZM201 has all the OBD2 functions you need. Read & clear codes, turn off engine light or MIL, view freeze frame, read I/M readiness, retrieve vehicle VIN, battery voltage test, live data stream (with graphing display), built-in 35901 DTCs, O2 sensor test, onboard monitoring mode, and perform component testing etc.
Enhanced OBD2 Scanner Diagnostic Tool: Live data and DTC replay combined with printing function, you can connect it to a computer for fault data printing, prevent auto repair shops from charging randomly, save money and time. ZM201 obd scanner also comes with free-lifetime software updates, ensuring you always have the latest features and improvements.
35,901 DTC Lookup: ZM201 car code reader built-in 35,901 DTCs, the old model obd2 usually only have 3,000-10,000. So the ZM201 car scanner has a huge advantage, which means that this obd2 scanner can better help diagnose and solve your vehicle faults. This is a great option if you want to replace or upgrade an existing car scanner.
Compatible with 98% Vehicles: ZM201 OBD2 scanner for car is compatible with most cars after 1996(USA)/2002(EU)/2008(Asia). If your car has an OBD2 port (16Pin), and the production time meets the above timeline, then your vehicle is compatible. But it is not compatible with new energy vehicles, hybrid vehicles, and models that do not comply with the OBD2 protocol.
Convenient Shortcut Functions: The addition of shortcut keys enhances the user experience. Pressing F1 enables you to quickly retrieve trouble codes, while F2 provides instant access to I/M readiness information. We've also introduced left and right navigation buttons (the previous model had only up and down buttons), making operation even more convenient.

Rank No. #10

VDIAGTOOL VD10 OBD2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader for Turn Off CEL with Live Data/Freeze Frame/I/M Readiness for All OBDII Protocol Cars, 2025 New Version

【A MUST-HAVE TOOL FOR DIYERS】- VDIAGTOOL VD10 car code reader is an incredibly useful obd scanner for each car owner or hobbyist, even for those with little to no experience when it comes to vehicle mechanics! Using this car diagnostic scanner is extremely easy. All you have to do is attach it to your car OBDII port and you can diagnose car problems in seconds! Read Codes (DTCs); Clear Codes; Live Data; View Freeze Frame; I/M Readiness; Vehicle Information.
【KEEP ENGINE IN GOOD STATUS】- VDIAGTOOL check engine code reader brings a fast access to scan, read the car fault code, show its definition on the screen instantly, troubleshooting to find the root causes of problems, erase the engine fault code and turn off the MIL (Malfunction Indicator Light).car code reader
【READ/CLEAR CODES & DTC LOOKUP】- No search online & saving your time, this vehicle car code reader retrieves generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) codes, pending codes and displays DTC definitions based on the built-in database(more than 3000 codes) on the TFT screen, find out the root causes and clear the codes after fixed.
【LIVE DATA & RETRIEVE FREEZE FRAME】- This diagnostic scan tool for accurate diagnosis enables you to retrieve data from vehicle sensors, such as Engine RPM, Intake air temperature, Short/Long term fuel, Misfire data and etc. The freeze frame is stored in the PCM together with the diagnostic trouble code (DTC) related to the fault. VD10 car code reader car scanner can be a valuable & practical diagnostic aid and also greatly help when diagnosing intermittent problems.
【I/M READINESS for THE S-nn-0-g CHECK】- OBDII vehicle may not pass the annual inspection unless the required monitors since reset are complete. So you should at least read the readiness monitors and make sure they are ready. This car obd2 scanner diagnostic tool is equipped with I/M readiness function to check the operations of the e-m-issi0n system on OBD2 compliant vehicles, run I/M monitor readiness test, checking if the pass vehicle s-m-0-g inspection.

SaleRank No. #11

Zmoon OBD2 Scanner Diagnostic Tool, Vehicle Check Engine Code Readers with Reset & I/M Readiness & More, Car OBDII/EOBD Diagnostic Scan Tool for All Vehicles After 1996

Car Diagnostic Scanner with Full OBD/EOBD Function: Read codes and clear codes, 10000+ fault codes available for query, viewe freeze frame, I/M readiness and historical I/M Data, live data stream and live curve (car speed, battery voltage etc), car information reading, oxygen sensor test, EVAP test, calculate load value, engine coolant temperature, get engine speed. It has all the OBD functions you need.
2.8'' HD Color Screen: Compared with traditional OBD scanners, Zmoon 2.8'' HD color check engine code reader displays more and richer content, which will not cause eye fatigue after long-term use. And the body design is very suitable for one-handed holding.
Compatible with Most Vehicles & 7 Languages Available: OBDII/EOBD car scanner diagnostic for all cars after 1996 and newer American/European/Asian cars, supports English, Spanish, French, German, Italian, Russian and Dutch.
Plug and play: Directly powered by the car, even beginners can quickly master and use the car code reader proficiently. No need to download APP, it is more accurate and stable than the wireless bluetooth code reader! And there are 3 statu lights on the device to remind you if your car is faulty, which is very friendly to beginners.
10,000 DTC Lookup: Built-in 10,000 DTCs, the old model obd2 usually only have 3,000 DTC. So the V317 car scanner has a huge advantage, which means that this obd2 scanner can better help diagnose and solve your vehicle faults. This is a great option if you want to replace or upgrade an existing car scanner.

SaleRank No. #12

OBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader, Clear Error Code Live Data Reset Exclusive APP

【Comprehensive Performance Testing】V011 OBD2 Scanner provides a complete diagnostic solution, giving you a thorough understanding of your vehicle's condition. It supports a variety of performance tests, support 9 protocols,👍automotive fault clearing，including fast reading of DTCs, access to electronic emission readiness, turning off CEL or MIL, resetting monitors, reading live data and retrieving the vehicle's VIN, freeze frame, sensor data, data streaming, diagnostic reports, onboard monitoring, live data streaming, and more. With these features, you can monitor your car's performance in real time and discover potential problems before they become major issues.
【Convenience and Savings for All Users】Designed with user-friendliness in mind, the V011 OBD2 Scanner is perfect for both novices and seasoned car enthusiasts. The intuitive app helps you interpret the check engine light, and suggests possible fixes. This can help you avoid unnecessary trips to the repair shop and prevent you from being overcharged for repairs. The product also includes helpful how-to guides and video tutorials, empowering you to clear the check engine light yourself and save significantly on repair bills.The fault code can only be cleared after the car is repaired. ⚠️ Notice：lf the car is not repaired,the fault code can only be cleared by the computer in the 4s shop.
【Intuitive Data Visualization】Understanding car diagnostics has never been easier. The V011 OBD2 Scanner displays detected data in clear, easy-to-read charts. Whether it's engine coolant temperature, engine speed, vehicle speed, or control module voltage, the visual representation helps you quickly grasp your car’s status. Even beginners can compare these readings against normal values to determine if their car needs any repairs.
【Broad Compatibility】The newly upgraded V011 OBD2 Scanner supports over 96% of car makes and models, making it one of the most versatile diagnostic tools on the market. It is compatible with a wide range of brands including Toyota, Honda, Chevrolet, Ford, Mercedes-Benz, Jeep, BMW, Porsche, Subaru, Nissan, Cadillac, Volkswagen, and Lexus, covering vehicles from 1996 to the present. This ensures that almost any vehicle owner can benefit from its extensive features. The device also supports multiple languages, including English, German, Spanish, Finnish, French, Italian, Dutch, Portuguese, and Chinese, ensuring accessibility for a global audience.
【Advanced Bluetooth 5.4 Connectivity】Say goodbye to the hassle of traditional wired connections. The V011 OBD2 Scanner features an upgraded Bluetooth 5.4 system, providing faster and more reliable connections. Simply turn on your vehicle's Bluetooth, access the application page, and wait for the connection to establish automatically. This seamless connectivity ensures you can start diagnosing your vehicle without any delays.

SaleRank No. #13

UMEIJA OBD2 Scanner with Upgrade Battery Tester - Diagnostic Tool for Cars That Check Engine Light & Emissions Readiness Read and Clears Vehicle Error Codes for All OBD II Protocol Vehicles Since 1996

Multi-Function: This code reader for cars and trucks is like a micro mechanic, which can quickly read and clear engine error codes, live data stream (with graphic display), view freeze frame, check MIL readiness status, read I/M monitoring readiness status and collect vehicle information, display vehicle indicators in detail. You can use it to check fault codes by yourself and display code definitions, understand the health of the vehicle, be fully prepared for going to the auto repair shop for car maintenance.
Wide Vehicle Compatibility: Multiple Uses - The OBD2 professional automatic scanner supports all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN.Works with most 1996 and newer US cars, 2000 EU and Asian cars, light trucks, SUVs, and newer OBD2 and CAN vehicles both at home and abroad. Please check compatibility with your model before purchasing. This car code reader supports multiple languages such as English, German, French, Spanish, Finnish, Dutch, Russian and Portuguese, making it an ideal choice for international users, deeply loved and highly recommended by customers worldwide.
Rugged and Compact Design: The OBD2 scanner is a compact and well-designed car parts. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. It comes with a 2.5-foot heavy-duty cable with a standard 16-pin OBD connector. The cable is made of a very thick flexible insulation layer and is sturdy and durable. Since OBD2 scanners can easily fall to the ground while working in the car, the structural design of the scanner is very demanding, and this OBD2 scanner can well meet the customer's needs for sturdiness and compactness.
Accurate, Fast and Worth Having: The OBD2 code reader adopts an upgraded microprocessor, its powerful performance provides fast and accurate results and displays them on the screen, draws and records real-time vehicle sensor data, helps you understand the condition of the car, quickly diagnose and repair common car problems. 6 buttons for quick operation, plug-and-play design makes it easy to use, you can easily operate it without reading the manual. The OBD2 scanner is not only designed to be lightweight and portable, but also simple, accurate and fast to operate, affordable and more cost-effective, it is a must-have tool for home DIY diagnosis or mechanics to use in auto repair.
Battery Tester and Advanced OBDII System Diagnostics: This advanced code reader with battery has a built-in easy-to-use battery tester for monitoring battery life and voltage, helping you quickly assess the battery health of your vehicle, prevent unexpected failures and ensure reliable car performance. At the same time, this engine fault code reader provides advanced diagnostic functions, including testing the O2 sensor and EVAP system to measure oxygen concentration, control the amount of fuel injection, reduce fuel consumption, maintain optimal combustion conditions, improve engine efficiency; reduce exhaust emissions, and better protect the environment.

SaleRank No. #14

AMTIFO OBD2 Scanner with Battery Tester - Diagnostic Tool for Cars, Check Engine Light & Emissions Readiness, Real-Time Date, Plug & Play, Multilingual, Support All Vehicles

Comprehensive Vehicle Diagnostics – Supports nine OBDII/EOOBD protocols, providing complete diagnostics for all car types. Easily read and clear check engine light codes for accurate troubleshooting
Battery Health & Voltage Monitoring – Exclusive battery tester checks battery life, charge, and voltage, keeping you informed of your car's battery status at all times
Real-Time Data Streaming – Access live data with clear graphs, enabling you to monitor vehicle performance in real-time and ensure emissions readiness for smog checks
User-Friendly & Multilingual – Simple plug-and-play setup with a responsive color screen. Supports 13 languages, making diagnostics accessible to users worldwide.
Durable & Compact Design – Built to last with a rugged exterior for easy handling. Portable and convenient, ideal for DIY diagnostics at home or professional use in shops.

Rank No. #15

A-Premium AD200 Professional OBD2 Scanner Car Diagnostic Tool, OBDII EOBD Code Reader, Enhanced Check Car Engine Light Diagnostic Scan Tool, Upgraded Fault Code Scanner for All Vehicles From 1996

[Built-in 15+ Powerful Functions]: Compared to entry-level diagnostic tools, the AD200 not only has all of their functions, but it is also more professional and powerful. This vehicle code reader supports: read/clear code, I/M readiness, EVAP/o2 sensor test, freeze frame, real-time data stream curve and more. with those function, you can quickly check the cause of the engine check light (MIL), and reset it, but also can accurately read the dtc code and clear it, let your car back to health
[Enhanced OBD2 Scanner Diagnostic Tool]: This obd scanner has been greatly enhanced in terms of data reading, Can read up to 50 data (battery voltage, coolant temp, engine RPM, load value, air flow rate, oil temp, fuel rail pressure, transmision gear status...) It can provide you with extremely detailed data stream, so that you can diagnose vehicle faults more accurately. It also supports recording fault data for review and printing fault data which can send it to professionals for analysis
[Show Detailed Data & Retrieve vehicle VIN]: AD200 car diagnostic tool not only diagnoses the engine system and show detailed data, but also convert boring data into real-time visual curve, which can greatly help you intuitively observe the abnormal fluctuations of the data, and narrow down your check, saving you a lot of time and maintenance cost. This auto fault code scanner also has a built-in "one-click get vehicle information" practical function, which can quickly retrieve VIN/CID/CVN
[Bigger Screen & Efficient Hotkeys]: AD200 has a 2.4 inches (262k) true color display to show the UI more clearly. Different from other basic diagnostic tool, AD200 has more button, make daily operation more convenient. This scanner also adds two hotkeys: I/M - quick start I/M test, faster know engine system current situation and whether can pass sm-og test, the Help - press this key to get tip (about OBO or datastream or I/M readiness explanation/printing help), let you know the scanner quickly
[Warning Light & Support Print]: There are three warning lights (green, yellow, red). After the diagnosis of the system, it will tell you the seriousness of the vehicle fault, in which the green means that your vehicle is very healthy, the yellow means that your car is a little abnormal, but it does not affect the driving, the red means that your car has a serious fault. this code readers scan tools scan tools support generate or print diagnostic report, so that you can provide it to technician

SaleRank No. #16

2025 FOXWELL NT614 Elite OBD2 Scanner Diagnostic Tool with 5 Services Engine Airbag Transmission ABS Scanner para Autos ABS/SAS/EPB/Throttle/Oil Lifetime Free WiFi Update Battery Test Car Scanner

【Easy to Use with Free WiFi Update】Do you feel frustrated with register an account to update your scanner? The 2025 Foxwell NT614Elite OBD2 scanner simplify the registration process. No need to register again and enjoy Free Lifetime update. We change the previous micro SD card update into one-click WiFi Update, also include the operation system. It adopts Linux system rather than traditional system. So this scanner para autos is more convenient and faster to bring you a better user experience
【5 Special Functions】 Before taking to the dealership, this car scanner diagnostic tool can react car systems with accurate data in minutes and perform Oil Reset, EPB Reset, ABS Bleeding, SAS Calibration, and Throttle Reset. Your daily maintenance needs can be done easily with less fee! The obd scanner can help you get rid of overcharged scam and save time & money. Please kindly note that other function not mentioned on the product page like camshaft postion sensor relearn is not supported.
【ABS/SRS/TRANMISSION/ENGINE Car Scanner】The obd2 scanner diagnostic tool NT614E can pinpoint out the car components' problem when it detects flashed warning light of transmission, ABS, SRS and engine system. It can scan deeper than basic scanner for car. This obd2 scanner with abs and srs can read & erase fault codes and graph live data when more complicated car problems happened. It’s A must-have tool for your garage!
【Full OBD2 Functions】You can use the code reader to read/clear codes, view live data, freeze frame, I/M readiness, EVAP test, On-board Monitor test, gain vehicle info, check the MIL light etc. Notice: The fault code can be cleared after the problem is fixed. Besides, this best engine code reader works for OBDI and OBDII most cars after 1996 including the latest 2022/2023 models
【Real-time Live Data + One-click Code Definition】Foxwell NT614E scanner for cars comes with exclusive DTC Lookup menu. You could One-click search fault codes' meaning anytime. This scan tool also displays real-time data of Engine Speed, Vehicle Speed, Electrical Load Switch, Gas Distribution, Transmission Temperature... The abnormal car part can be caught in seconds by single, multi- graph, and merge two graphs for analysis

SaleRank No. #17

FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars After 1996

Read and Clear Fault Codes: FOXWELL NT201 code reader for cars and trucks could quickly detects the issue that triggers the check engine light, reads and clears engine fault codes, and turns off the check engine light (MIL) after repairs.
Live Data and DTC Reference: Access live data like ETC, MAP, and RPM to identify engine issues accurately. Equipped with built-in trouble code library to provide instant code definitions and clues for your reference to begin car troubleshooting in the right direction and fix car effectively.
One Key Emissions Test: Easily check your vehicle's emission readiness status with one-click I/M readiness hotkey. The car code reader provides visual(red/yellow/green lights) to guide you through the process, simplified emissions checks before state inspections.
Extensive OBDII Modes: Features advanced OBDII functions, including O2 Sensor Test Mode 5 for CAN protocol vehicles. This NT201 obd2 scanner helps diagnose engine performance by analyzing oxygen content in exhaust gases, which is important for addressing engine efficiency issues.
Broad Compatibility: Works with all OBDII/EOBD compliant cars, light duty trucks, suv, minivans, and hybrids sold worldwide. NT201 engine light code reader supports all cars after 1996. Contact us to confirm compatibility with your vehicle if unsure.

Rank No. #18

FOXWELL NT301 Plus 2 in 1 OBD2 Scanner Battery Tester, OBDII Diagnostic Tool Check Engine Car Code Reader, 12V 100-1100CCA Cranking Charging System Alternator Test, Live Data, Full ODB2 Diagnosis

Upgraded of FOXWELL NT301, More Features: 2-IN-1 OBDii scanner with 12V battery tester. Combines full OBD2 functions with battery health testing, one NT301 Plus is enough. With visual and audible LED indicator, this car scanner will timely indicate the OBD2 monitor status
Check Engine Code Reader: Capabling of full OBDII functions, this diagnostic scanner can read Diagnostic Trouble Codes (DTC), Check Engine Light (CEL), clear error codes, show live sensor data with graph(engine RPM, coolant temperature, fuel trim, and sensor readings), freeze frame data, on-board monitoring tests, component test, and retrieve ECU info. Know car conditions before annual inspection
Easy S-M-O-G Test: Retrieving I/M Readiness status data by one-click I/M readiness key with Build-in LED Light. It can quickly indicate the E-mission status and show you the test results in Green, Yellow and Red LED light. And DTC's coded descriptions save time in locating the bad sensors or components and researching solutions
Timely Battery Health Check: The battery is vital for vehicle start-up. This car battery tester quickly identifies issues with the battery, starting, and charging systems in seconds. It provides crucial insights into battery health (SOH), charge state (SOC), voltage, current, and rating, helping you avoid roadside breakdowns and costly repairs
Powerful & Precise Testing: This battery analyzer tester is compatible with AGM flat, AGM, and GEL batteries. Utilizing advanced Conductivity Technology, it ensures accurate and stable readings through its robust mechanical connections and clip-on leads, minimizing data loss. With the proprietary FOXWELL Chip, it enhances data processing efficiency, improving test accuracy by 20%

How Do You Buy The Best Engine Diagnostic Tool?

Do you get stressed out thinking about shopping for a great Engine Diagnostic Tool? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Engine Diagnostic Tool, which is why we have assembled a comprehensive list of the greatest Engine Diagnostic Tool available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Engine Diagnostic Tool that you consider buying. Your questions might include the following:

Is it worth buying an Engine Diagnostic Tool?
What benefits are there with buying an Engine Diagnostic Tool?
What factors deserve consideration when shopping for an effective Engine Diagnostic Tool?
Why is it crucial to invest in any Engine Diagnostic Tool, much less the best one?
Which Engine Diagnostic Tool are good in the current market?
Where can you find information like this about Engine Diagnostic Tool?

We’re convinced that you likely have far more questions than just these regarding Engine Diagnostic Tool, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Engine Diagnostic Tool, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Engine Diagnostic Tool. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an Engine Diagnostic Tool buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Engine Diagnostic Tool currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of Engine Diagnostic Tool has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Engine Diagnostic Tool?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Engine Diagnostic Tool.
Customer Ratings: Number ratings grade Engine Diagnostic Tool objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Engine Diagnostic Tool.
Product Quality: You don’t always get what you pay for with an Engine Diagnostic Tool, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Engine Diagnostic Tool is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining Engine Diagnostic Tool information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Engine Diagnostic Tool is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

18 Best Engine Diagnostic Tool of 2022 – Romance University

How Do You Buy The Best Engine Diagnostic Tool?

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