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Recommended products regarding the topic “Diagnostic Code”
We have compared products in the section “Diagnostic Code”. Here you can find the top 15 in the category “Diagnostic Code”.
Diagnostic Code – the most important at a glance
A “Diagnostic Code” is a unique identifier used in the medical and automotive sectors to classify and record malfunctions or illnesses. In the medical field, these codes are used globally and are classified under ICD (International Classification of Diseases) by the World Health Organisation; it ranges from ICD-1 to the latest ICD-11. In the automotive industry, diagnostic codes are known as OBD (On-Board Diagnostics) codes; they are used to identify specific problems within a vehicle’s system. The primary similarity between the ICD and OBD codes is that they both aim to expedite problem-solving and repairs. However, their most significant difference lies in their spelt-out use: ICD codes are utilized in the diagnosis of health conditions, while OBD codes are used in identifying mechanical or electronic faults in vehicles. Despite these differences, both systems play crucial roles in their respective industries and contribute to improved efficiency and accuracy.
Bestsellers in “Diagnostic Code”
A list of bestsellers under the category “Diagnostic Code” you can find here. Here you can see which products other users have bought especially often.
SaleBestseller 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. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
- 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 emission codes in seconds after you fixed the problem. 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. 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. Pls confirm with our customer service whether it is compatible with your vehicle 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.
Bestseller No. 2
VDIAGTOOL VD10 OBD2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader for Turn Off CEL with Freeze Frame/I/M Readiness for All OBDII Protocol Cars, OBD2 Scanner Diagnostic Tool
- 【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! Similar to a fixd car diagnostic tool, 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). Similar to a fixd car diagnostic tool, this car code reader helps ensure your engine stays in top condition.
- 【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. Comparable to a fixd car diagnostic tool, the 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.
SaleBestseller No. 3
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 e-missions readiness status, turn off CEL(check engine light) or MIL, reset monitor, read live data and retrieve VIN of your vehicle. The fault code will appear again even though you cleared before, if you don't repair the car completely. The fault code only can be cleared by NT301 after car repair finished, as like all the obd2 scanner's working principle.
- 【Read Fault Codes】About the read code funtion needs to be in the ignition on state and if the check engine light is on. If the vehicle is compatible with NT301, please select correct menu & ensure no hardware/wiring issues/obd2 interface damage for accurate results. The correct menu: Select OBDII-> Wait for seconds-> Select Read codes.
- 【Advanced OBDII Modes 】 This car scanner provides enhanced obd2 modes capabilities: O-2 sensors test and EVAP system leak monitor. It allows you to run a leak check on your car’s EVAP system and assess the fuel tank’s condition. The O-2 sensor test helps optimize the air-fuel ratio, boosting fuel economy and cutting em-issions. Saving you money on gas and reducing your vehicle’s environmental footprint.
- 【Live Data Graphing & Accuracy for Most OBD2 Vehicles】View and log live sensor data in graph form—monitor oxygen sensors, fuel trims, coolant temp, RPM, and more. Spot trends and suspicious values in real time. Compatible with most 1996+ gasoline cars, light trucks, and SUVs sold in the U.S., as well as many 2000+ European and Asian models. Also works on 12V diesel vehicles equipped with OBD2. It's a basic code reader and DOESN'T't support to scan ABS, SRS, EPB, A/C systems etc, . It also DOESN'T support ANY special functions like TMS reset/SRS Reset/ABS bleeding/automatic driving/tpms relearn/bluetooth related.
- 【S-mog Check Helper – Know Your Readiness Status at a Glance】With dedicated I/M readiness hotkeys and a simple Red-Yellow-Green LED indicator, you’ll instantly know if your vehicle is ready for em-issions testing. Built-in speaker provides audio feedback. No guesswork—just confidence before you head to the test center.
SaleBestseller No. 4
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 - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
- Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
- 2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - 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.
- Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
- ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.
Bestseller No. 5
Innova 5210 OBD2 Scanner & Engine Code Reader, Battery Tester, Live Data, Oil Reset, Car Diagnostic Tool for Most Vehicles, Bluetooth Compatible with America's Top Car Repair App
- OBD2 SCANNER & BATTERY TESTER IN ONE – The INNOVA 5210 OBD2 scanner not only reads and clears check engine light and ABS codes (coverage may vary) but also functions as a car battery tester to check alternator health and prevent unexpected breakdowns.
- LIVE DATA & REAL-TIME DIAGNOSTICS – Get instant access to OBD2 live data, including RPM, engine temperature, fuel trims, and oxygen sensor readings. The drive cycle readiness feature helps pass smog tests and emissions inspections with ease.
- ENGINE CODE READER – This automotive diagnostic tool works with most US, Asian, and European vehicles from 1996 and newer, including Toyota, Ford, Honda, Chevrolet, Nissan, Dodge, and more. Read and erase ABS (coverage may vary) and engine trouble codes with pinpoint accuracy. Please use Innova's Coverage Checker to verify coverage.
- OIL RESET & SMOG CHECK READINESS – The built-in oil light reset feature allows DIYers and mechanics to properly reset maintenance lights after an oil change. Check I/M readiness status to ensure your car is ready for an emissions test.
- NO SUBSCRIPTIONS – VERIFIED FIXES WITH FREE APP – Unlike other OBD2 code readers, the INNOVA 5210 provides verified fixes based on real-world repairs from ASE-certified mechanics. Trusted by 4M users, the RepairSolutions2 app on iPhone & Android gives you step-by-step repair guidance, suggested parts, and cost estimates—no extra fees or hidden subscriptions!
SaleBestseller No. 6
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 the Box] + [FOXWELL 2026 New Version] FOXWELL NT604 Elite scan tool is the 2026 new version from FOXWELL, designed for car owners who want to figure out the cause of issues before fixing car problems by scanning common systems like ABS, SRS, engine, and transmission. The NT604 Elite obd2 scanner diagnostic tool comes with the latest software, ready to use out of the box—no need to waste time downloading software first.
- [Affordable] + [Reliable Car Health Monitor] Will you be confused what happens 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. Note：The device is a diagnostic tool, not a repair tool. To turn off a warning light, you must first physically repair the issue causing it. Only then can the scanner be used to clear the corresponding fault code.
- [5 in 1 Car Diagnostic Scanner] Compared with obd scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also serves as 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 functions like reset or relearn. For the SRS system, NT604 Elite can read and clear common fault codes not caused by a crash, but crash/collision data cannot be cleared.
- [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 brands from worldwide (America/Asia/Europe). You don’t need to pay extra software fee. AUTOVIN may not work on some older vehicles or certain vehicle brands. If AUTOVIN fails, please input the vin code manually or go to the Diagnostic Menu to select your vehicle model.
- [Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level car scanner diagnostic tool only offers plastic bag to hold 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.
Bestseller No. 7
WEJOWE Upgraded OBD2 Scanner Diagnostic Tool, Check Engine Code Reader OBD2 Scanner with Reset, Auto Check Engine Light Mode 6, Mode 8 & I/M Car Diagnostic Scan Tool for All OBDII Car
- 【WEJOWE 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, onboard monitoring mode, and perform component testing etc
- 【OBD2 Diagnostic Scanner Tool Compatible with 98% Vehicles】: 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 for 10 languages: English, French, Spanish, German, Chinese, Russian, Italian, Japanese, Portuguese, Dutch, which make it easy to use for people from different countries.
- 【OBD2 Scanner Built-in 35,901 DTC Lookup】: The WEJOWE OBD2 scanner car code reader built-in 35,901 DTCs, the old model 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 catch potential problems before they cost you a fortune. Besides, you don't need to google the meaning of each fault code.If you are looking to replace or upgrade an existing car code reader, this code reader is an excellent option.
- 【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 & What You Will Get】: The OBD2 scanner tool is easy to carrying and storage,With each package, you will receive a canvas storage bag for convenient storage and a Type-C cable to connect to your computer.And 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.
SaleBestseller No. 8
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, 2026 Upgraded
- [ Wide Vehicle Compatibility ] This OBD2 diagnostic scanner works for all vehicles after 1996 (US-based) / 2002 (EU-based) / 2008 (Asia-based) that have a standard 16PIN OBD2 port. Supports all OBDII protocols including KWP2000, ISO9141, J1850 VPW, J1850 PWM, and CAN. If your car has a check engine light and an OBD2 port, this car code reader is designed to work. Please confirm vehicle compatibility before purchase. ZM201 OBD2 scanner diagnostic tool powered directly from the OBDII port — no battery or charging required.
- [ Essential Engine Diagnostics, Save Time & Cost ] Quickly read and clear engine fault codes, turn off the check engine light (MIL), view I/M readiness before smog tests, and retrieve VIN information. This car code scanner with over 50,000 built-in DTC database, you can understand what’s wrong before visiting a repair shop, helping you avoid unnecessary repairs and costs.The code reader can reset temporary fault codes, but permanent fault codes require repair before they can be reset.
- [ Live Data & Freeze Frame Diagnostics ] Go beyond basic code reading with live data stream (graph view), freeze frame, O2 sensor test, onboard monitoring and EVAP system checks. This engine code reader designed specifically for engine diagnostics only — does NOT support ABS, SRS, transmission or other advanced vehicle systems, making it a clear and reliable choice for engine-related issues.
- [ Clear Color Screen & User-Friendly UI ] This car scanner diagnostic tool features a 2.8-inch color display with adjustable brightness and light/dark modes for easy reading in any environment. Intuitive menu layout, shortcut keys for fast access, and visual vehicle status indicators mean no learning curve — suitable for beginners, DIY car owners, and experienced users alike.
- [ Plug & Play, Results in Seconds ] Simply plug the obd scanner into your vehicle’s OBD2 port (Typically located below the steering wheel/near the instrument panel.), turn the ignition ON, and get diagnostic results within seconds. No app, no setup, no complicated steps. Lifetime software free-updates ensure long-term usability, with optional PC connection for data review and printing (Support Windows XP/7/8/10, but not Mac).
Bestseller No. 9
FIXD Bluetooth OBD2 Scanner for iPhone & Android - Diagnostic Scan Tool for Repairs and Car Buying - Check Engine Code Reader & Enhanced Codes - (1 Pack w/Free 14-Day FIXD Premium Bundle)
- Easily Diagnose Car Issues from Your Phone – Scan and identify 39,000+ issues across thousands of vehicles, from Check Engine lights to enhanced codes. Validate repairs or vehicle condition and reset codes without being an expert.
- Free App with Unlimited Scans – Get simple explanations of your car's issues instead of confusing error codes. Get alerted when FIXD detects dangerously severe issues or needed maintenance so your car and loved ones stay safe.
- Manage All Your Cars in One App – Save scans by vehicle, track mileage-based reminders, and share results with family or a shop. The compact sensor stays hidden under the dash in all your cars, always ready to scan.
- Works with OBD2 Vehicles 1996+ – Supports gasoline & hybrid vehicles 1996+ and diesel vehicles 2006+. Connects via Bluetooth to iPhone and Android for fast, wireless diagnostics. Features may vary based on vehicle make and model.
- Free 14-Day Premium Trial Included (& Optional) – Get repair recommendations, cost estimates, vehicle value by condition, and live mechanic support. Upgrade anytime for advanced insights and expert help.
SaleBestseller No. 10
OBD2 Scanner Ease Setup Plug-Play: Clear Reset Engine Error Code Professional Code Reader Diagnostic Scan Tools with Freeze Frame/I/M Readiness for Cars Since 1996 & Newer - LK11
- EASY TO USE & PLUG AND PLAY DESIGN: This OBD2 scanner is designed for ease of use. Simply plug it into your car’s OBDII port for instant diagnostics, no technical knowledge required. Perfect for DIY enthusiasts, mechanics, and anyone who wants quick, reliable engine code checks
- COMPREHENSIVE CAR DIAGNOSTICS: Retrieve and clear engine fault codes, view live data, and analyze freeze frame information to monitor your car’s health. This diagnostic tool saves you the hassle and expense of mechanic visits, providing accurate insights into your vehicle’s condition
- KEEPS YOUR ENGINE RUNNING SMOOTHLY: Maintain your engine’s performance by quickly detecting issues with engine fault codes. This tool helps prevent major repairs by resolving problems early, saving both time and money. Ideal for preventative maintenance and efficient troubleshooting
- FIRST CHOICE FOR DIY & PROFESSIONAL MECHANICS: No automotive knowledge required! Easily use this scanner to identify and clear check engine light issues, empowering both DIYers and mechanics to resolve problems instantly. Ideal for those seeking fast, effective diagnostics
- ADVANCED MULTI-FUNCTIONALITY: Retrieve detailed vehicle information like VIN, Calibration ID, and CVN. Supports I/M readiness, engine coolant temperature, vehicle speed, and more, giving you complete control over your car’s diagnostics. Perfect for professional-level checks
Our Winner:
SaleWinner in comparison
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. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
- 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 emission codes in seconds after you fixed the problem. 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. 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. Pls confirm with our customer service whether it is compatible with your vehicle 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.
Current offers for “Diagnostic Code”
You want to buy the best products in “Diagnostic Code”? In this bestseller list you will find new offers every day. Here you will find a large selection of current products in the category “Diagnostic Code”.
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