Daisy
Last Updated: Feb 6, 2026
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| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ✅ |
★【SAVES MONEY AND TIME】The KW850 car computer reader is a professional vehicle diagnostic tool for car owners to quickly read and erase DTC (engine fault codes) as well as a battery tester. A look-up library with over 8, 000 built-in generic code definitions allows you to accurately identify the cause of your CHECK ENGINE and perhaps fix it without going to see your dealer. It also assists you in easily passing annual emissions tests and SMOG CHECK.
★【NOT ONLY TURN OFF THE CHECK ENGINE LIGHT 】Unlike other cheap car diagnostic scanners, KW850 OBDII code reader covers full OBDII/ EOBD diagnostic functions for engine system. O2 sensor test, EVAP systems test, and on-board monitoring test give you full control of your vehicle's running status, while a graphical and numeric live data stream display will help you to find out the faulty sensor readings. (Please be noticed: this function is for ENGINE System only).
★【UNIVERSAL COMPATIBILITY AND EASY TO USE 】Works on most 1996 US-based, 2003 EU-Based and Asian (OBDII & CAN) domestic and imported vehicles, including passenger cars, SUVs, light trucks, etc. Supports all OBDII protocols. Simply plug into the OBD II port on your car, turn the ignition on and you are ready to go. No battery or complicated apps install needed.
★【BEST IN THE MARKET】KW850 code reader car diagnostic tool is coming with the user friendly diagnostic interface and optimized software algorithm, it makes diagnosis 2-3 times faster than other OBD2 scanners. Featuring 2. 8'' LCD color screen and graphical real time sensor analysis, may help you fast identify faulty readings in seconds. Extra-long (4. 5') diagnostic cable coming in the package, allows you freely diagnose your cars even outside of vehicles.
★【WHAT YOU GET】KONNWEI KW850 OBDII check engine light code reader offers free storage case, life-time FREE software update service to fix the latest bugs or add newly features which makes it compatible to more vehicles in future (Please note: it CAN NOT be updated on an MAC PC). With a worry-free 36-month and professional technician staying behind, 7*24 at your service!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ✅ |
❂【FULL OBD2 MODES ENGINE CODE READER】KONNWEI KW310 OBDII code reader is a professional car computer fault code reader, except the normal read/erase engine fault codes function, it still supports Live data, Freeze Frame, I/M Readiness, O 2 test, On-board Monitoring that other obd2 scanners don’t have at this price.
❂【WORK ON ALL USA 1996 AND NEWER VEHICLES】Work on most 1996 and newer domestic and import gasoline or diesel vehicles(OBDII & CAN) that are located in USA, including passenger cars, SUVs, light trucks, etc. Simply connect the car computer reader with car’s obd2 port, turn on ignition then it’s ready to analyze check engine light. No battery or apps needed.
❂【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this automotive code scanner, stay at home and get the information you want then fix the car on your own.
❂【BEST IN THE MARKET】KW310 car diagnostic scan tool is coming with the user-friendly diagnostic interface and optimized software algorithm, it makes diagnosis 2-3 times faster than other OBD2 scanners. It also supports 7 languages, absolutely it’s the most cost-effective code reader ever.
❂【3 YEARS LONG AFTER-SALE SERVICE】Gift box package includes obd2 scanner*1, 30" obd2 cable*1, user manual*1. We provide 3 years long after-sale service to every product, any OBD-II Scanner issue or technical problem is welcomed to consult us, we have the professional engineer 7*24 at your service.
❂【HOME NECESSITY】No battery needed, KW310 obd2 scanner is powered directly from the 16pin DLC in your vehicle. It is recommended as a necessity in your toolbox and one of the best gifts for Home and Autoshop mechanics.
❂【WARM TIPS 】Plug the car scanner into the OBDII port on your car, turn the ignition on and then it will power on. Please contact KONNWEI directly for assistance if there is a connection error.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ✅ |
❂【FULL OBD2 MODES OBDII Code Reader】KONNWEI KW310 code scanner is a professional check engine light diagnostic scan tool, except the normal read/erase engine fault codes function, it still supports Live data, Freeze Frame, I/M Readiness, O2 test, On-board Monitoring that other obd2 scanners don’t have at this price.
❂【WORK ON ALL USA 1996 AND NEWER VEHICLES】Work on most 1996 and newer domestic and import gasoline or diesel vehicles(OBDII & CAN) that are located in USA, including passenger cars, SUVs, light trucks, etc. Simply connect the car diagnostic scanner with car’s obd2 port, turn on ignition then it’s ready to analyze check engine light. No battery or apps needed.
❂【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this car computer reader, stay at home and get the information you want then fix the car on your own.
❂【BEST IN THE MARKET】KW310 car engine diagnostic code scanner is coming with the user-friendly diagnostic interface and optimized software algorithm, it makes diagnosis 2-3 times faster than other OBD2 scanners. It also supports 7 languages, absolutely it’s the most cost-effective code reader ever.
❂【3 YEARS LONG AFTER-SALE SERVICE】Gift box package includes obd2 scanner*1, 30" obd2 cable*1, user manual*1. We provide 3 years long after-sale service to every product, any OBD-II Scanner issue or technical problem is welcomed to consult us, we have the professional engineer 7*24 at your service.
❂【HOME NECESSITY】No battery needed, KW310 obd2 scanner is powered directly from the 16pin DLC in your vehicle. It is recommended as a necessity in your toolbox and one of the best gifts for Home and Autoshop mechanics.
❂【WARM TIPS 】Plug the car scanner into the OBDII port on your car, turn the ignition on and then it will power on. Please contact KONNWEI directly for assistance if there is a connection error.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ✅ |
【A Professional Vehicle Doctor for Car Owners, Easy to Use】 -- The obd2 scanner can quickly read and erase DTC (engine fault codes), on-screen DTC definitions and built-in DTC look up library allow you accurately determine causes of the check engine light and turn-off Check Engine Light, Reset Monitors; I/M Readiness Monitoring; Graphical and Numeric Live Data Stream; Automatic VIN acquisition, etc. Perfect for father's day gifts!!!
【Strong Compatibility】--Works on most gasoline vehicles 1996 US-Based, 2001 EU-Based and Asian cars, and newer OBDII/Eobd & CAN domestic or import vehicles. Supports all OBDII protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN. 8 kinds of language available: English, German, French, Spanish, Italians, Dutch, Russian and Portuguese.
【Exclusive OBDII Diagnostics】-- This automotive scanner with unique one-click I/M readiness status design, which make it easy to use this car scanner right out of the package. Red-Yellow-Green LEDs and build-in speaker indicate emission monitor status allow you easily determine whether your vehicle meets the State Emission Monitor Status and assist you to pass the Smog Check.
【A Necessity in Your Vehicle Toolbox】-- Anti-shock and Slip Designed OBD2 Code Scanner for Cars, 15ft Height Drop-test Passed, Survive Longer in Complex Environment. 2.8" TFT Big Size LCD Color Screen and More Comfortable Hand Feeling. Exclusive 5-ft Long Diagnostic Cable Allows You to Perform a Professional Diagnostics in or Out of Your Vehicles. No battery required, it is charged directly from the OBDII car scanner interface in your vehicle.
【Lifetime Updateable and Warranty】--KONNWEI provides life-time FREE software update to fix the latest bugs or add newly parameters which makes it compatible to more vehicles in future and store newest car model data. Just download the software from website in the manual, then follow on-screen instructions to go, very easy. Please Note: CAN NOT be update on MAC SYSTEM! 100% Full Refund & Return Guarantee and Lifetime Free Warranty
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| xichuanxianchenyueshangmaoyouxiangongsi | 5.61 | ✅ | ✅ | ✅ |
➤➤➤➤➤【POWERFUL FEATURES】-The KONNWEI OBD2 automotive code reader is a professional diagnostic scan tool for car owners, which has Almost OBDII/EOBD Diagnostic Functions, including Read & Clear DTCs, Query Freeze Frame Data, Read Dynamic Datastream, Read Vehicle Information, O2 Sensor Test, EVAP Systems Test, On-board Monitor Test, Read Pending Fault Code, Read Permanent DTC, Read Readiness Status, Turn-off Malfunction Indicator Light (MIL), Print Data to PC, Permanent Code Retrieval, and more.
➤➤➤➤➤【POWERFUL COMPATIBILITY】- The KONNWEI obd2 code scanner works on most vehicles sold in the USA from the year of 1996; Supports all OBDII protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN. Works with English, German, French, Spanish, Italians, Dutch, Russian and Portuguese. It gets the power directly from the OBDII Data Link Connector in your vehicle. Fast scan and erase engine fault codes, let you decide if it's something you can fix or need more advanced help. Save money and time.
➤➤➤➤➤【EXCLUSIVE OBDII DIAGNOSTICS】- This obd ii car scanner automotive scanner with unique one-click I/M readiness status design, which fast to scan vehicle’s engine healthy status. Exclusive O2 Sensor Test, EVAP Test of Fuel Tank System(Mode 8) and Advanced On-board Monitoring(Mode 6) make you full control of vehicle running status. Red-Yellow-Green LED indicators allow you easily determine whether your vehicle meets the State Emission Monitor Status and assist you to pass the Smog Check.
➤➤➤➤➤【SMART DESIGN】- KONNWEI OBDII diagnostic scanner has 2.8" Big Size LCD Color Screen. No need to install any APP, you can read codes on the screen. Anti-shock and slip designed, unique dust-resistant surface, give you more comfortable hand feeling, more durable and stronger. Audio feedback and 3 LED indicators tell you the trouble codes status and allow you to diagnose vehicles faster and more convenient to operate.
➤➤➤➤➤【LIFETIME SOFTWARE UPDATE】- This obd2 auto scanners unit provides life-time FREE software update to fix the latest bugs or add newly parameters. Just download the software from website in the manual, then follow on-screen instructions to go, very easy. Please Not: CAN NOT be update on MAC SYSTEM! If you have any problem, please feel free to contact us at the first time, our customer service has always been there to help, we promise to give the customer 100% SATISFACTION GUARANTEE.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ✅ |
ALL IN ONE OBD2 GAUGES ➤ KW206 Car OBD2 HUD display is the combination of automotive trip computer gauge and diagnostic scan gauge. Not only it can display up to hundreds of real-time engine parameters in its digital 3.5’’ color screen like speedometer, RPM, water coolant temperature, fuel consumption, total mile ... but also can read engine fault codes and turn off the check engine light.
PROFESSIONAL OBD2 SCANNER ➤ the KW206 car hud is newly designed as an enhanced HUD display and car diagnostic scanner, it’s a smart OBD2 gauge for car owners to quickly read and erase DTC (engine fault codes) and check Live Data Stream which can help you to accurately identify the cause of your CHECK ENGINE LIGHT and perhaps fix it without going to see your dealer.
SAFETY DRIVING HUD ➤ the KW206 is an upgraded version of car Head-Up Display with its high updating rate, warning systems and more. Accessing data directly from car computer and display it in a large digital 3.5in color LCD, avoid accident happening when you’re driving with head down. Besides, 4 parameters alarm including RPM, VSS Speed, ECT (Engine Coolant Temp), Voltage can be set to help you reducing over-speed risk and tickets, developing a good driving habit and safety.
UNIVERSAL COMPATIBILITY ➤ Works on all 2003 or newer OBDII certified gas/diesel engine cars, SUVs, Light Trucks, including J1850/CAN/ EOBD protocols vehicles. Simply plug into car's OBDII Port, it will get power on automatically and follow the on-screen instruction to go. On Top 4-buttons operation allows you quickly and easily access the powerful features of the KW206 Digital Meter Gauge.
EXTRA FEATURES ➤ KONNWEI KW206 supports the unit switch from metric to imperial like KM-Mile, auto-adjust screen brightness, fast data transmission rate, 0-100 speed-up test. Also it supports lifetime software update to fix any possible issue; You can leave obd2 gauges stay in the car without unplugging, KW206 will automatically enter sleep mode when engine off, power on while detecting the ignition. Definitely it’s an essential OBD2 digital gauge for every car owner.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ✅ |
✅【10 ENHANCED OBD2 FUNCTIONS】Except the basic functions like read and erase codes, VIN information, KW320 also equipped with more advanced OBD2 functions that other similar code readers didn’t have like O2 and EVAP test, these will be very important when needed.
✅【COLOR DISPLAY】2.8 inch large colorful screen allows you easy to read no matter day or night, plug and play no need extra power supply powered by car OBDII port.
✅【WIDE COMPATIBLE】Works on MOST 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 9 languages English, German, French, Spanish, Russian, Polish, Italian and Portuguese.
✅【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this car computer reader, stay at home and get the information you want then fix the car on your own.
✅【3 YEARS LONG AFTER-SALE SERVICE】Gift box package includes obd2 scanner*1, obd2 cable*1, user manual*1. We provide 3 years long after-sale service to every product, and we have the professional engineer 7*24 at your service.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KONNWEI Official | 9.86 | ✅ | ✅ | ❌ |
❂【FULL OBD2 MODES ENGINE CODE READER】KONNWEI KW310 OBDII code reader is a professional car computer fault code reader, except the normal read/erase engine fault codes function, it still supports Live data, Freeze Frame, I/M Readiness, O 2 test, On-board Monitoring that other obd2 scanners don’t have at this price.
❂【WORK ON ALL USA 1996 AND NEWER VEHICLES】Work on most 1996 and newer domestic and import gasoline or diesel vehicles(OBDII & CAN) that are located in USA, including passenger cars, SUVs, light trucks, etc. Simply connect the car computer reader with car’s obd2 port, turn on ignition then it’s ready to analyze check engine light. No battery or apps needed.
❂【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this automotive code scanner, stay at home and get the information you want then fix the car on your own.
❂【BEST IN THE MARKET】KW310 car diagnostic scan tool is coming with the user-friendly diagnostic interface and optimized software algorithm, it makes diagnosis 2-3 times faster than other OBD2 scanners. It also supports 7 languages, absolutely it’s the most cost-effective code reader ever.
❂【3 YEARS LONG AFTER-SALE SERVICE】Gift box package includes obd2 scanner*1, 30" obd2 cable*1, user manual*1. We provide 3 years long after-sale service to every product, any OBD-II Scanner issue or technical problem is welcomed to consult us, we have the professional engineer 7*24 at your service.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| CRDZ MC88 | 5.16 | ❌ | ❌ | ❌ |
All-in-One Scan Tool: Fast read and clear DTCs, turn off MIL(‘Check Engine’ Light). Quick access to I/M readiness. Read/review data stream/freeze frame. Read/record/graph/playback live O2 sensor data. Request on-board monitoring test results. Request EVAP system test results.
Vehicle Coverage: Works for 1996 US-Based, 2001 EU-Based and Asian cars, and newer OBD II/Eobd & CAN domestic or import vehicles.
2.8" TFT LCD Screen: 2.8’’ TFT 320*240 pdi LCD screen, high luminance, better contrast ratio, rich in layers. Best solution for high quality pictures display.
Convenient Upgrade & Print Codes:Login website to select the latest version to be updated. If you would like to print the codes, select the codes on scanner, and ‘Print’ it, the codes will send to PC, you can edit it or print it immediately.
High Quality and High Resolution TFT colorful display helps you easily to find out the troubles of your car. Featured battery real-time monitoring during diagnostics, avoid un-expected happened.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Konnwei | 9 |
We've carried out a comprehensive analysis of 10,936 reviews on code readers, using our selection criteria to identify the best options in the automotive tools & equipment. Our findings reveal that most customers typically select code readers priced around $51.42, with top brands including motopower, ancel, zmoon, foxwell, leekooluu, auceli, amtifo, fixd and autel and bluedriver
Our team of expert editors reviewed these high-quality items and handpicked the top 9 code readers for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive tools & equipment category. These include motopower inc, ancel, auto-refitting shop, amazon.com, iprobay-us, auceli auto, amtifo-us, carepacked and autel official and autel direct .
We are dedicated to assisting our users in finding the right tools Products based on their needs, saving them considerable time when choosing which code readers to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.