OBDCheck BT12

Return Policy

  • 30-Day Money Back
  • One-Year hassle free replacement warranty against defect
  • Register and extend the warranty for another 6 months

Shipping Information

Delivery Estimate:
* USA & Canada: 2-4 business days (due to the COVID-19, there may be some delays).
* Europe: 6-10 business days (8-15 business days during COVID-19).
Most items can be shipped to United States, Canada, Europe and Australia. Please check ship-to countries below for each item. If your country is not listed, please go to amazon.com to purchase.




The OBDCheck BT12 is a powerful, 2-in-1 automotive diagnostic tool for car owners that combines OBD2 scan and battery test (12V) functions. It is specially designed to work with most 1996 and newer American, Asian and European OBDII/CAN compliant vehicles. When you have a check engine light problem, or want to check the battery health, the OBDCheck BT12 will be a very useful and reliable tool which offers comprehensive vehicle information for rapid, accurate diagnosis and repair.


1. It does NOT read or reset non-OBD II systems (such as ABS, airbag, body control, TPMS, oil service light, etc.).

2. It does not work with hybrid or electric vehicles.

3. It does not check 24V batteries.

What You Will Get

(1) Diagnostic tool with large 3.9’’ colorful LCD screen: display more content at one time.

(2) Premium Nylon Carrying Case: neatly store the tool and cables.

(3) Extra Long 4.9ft OBDII Diagnostic Cable: perform diagnosis from a further distance.

(4) 2.6ft Battery Cable: for battery test function.

(5) User Manual: detailed step by step instructions.


  • OBD2 Diagnosis: read check engine light error codes (DTCs) and get code definitions, so you can quickly find out what’s wrong with your car when the CEL/ MIL turns on.
  • Battery Tester: check the condition of most types of 12V batteries, including voltage, CCA, SOH and SOS.
  • Enhanced OBD2 Functions: show real time sensor readings (SAE PIDs); read freeze frame data; retrieve I/M Readiness which lets you know whether your vehicle will pass SMOG CHECK or not; read vehicle information like VIN.
  • Universal Vehicle Coverage: Works with OBD2 / EOBD compliant cars and light trucks (domestic and imported, since year 1996 in the US, 1998 in Canada – 1998, 2001 gas & 2004 diesel in EU, etc.).
  • Easy To Use: 3.97’’ 800*400 color LCD display, built-in DTC database and multilingual, intuitive interface plus a storage case for easy carrying. Does not work for hybrid or electric vehicles. Does not read ABS, airbag trouble codes, etc. One-year replacement warranty.

APPs (no app is required)


User Manual

Print Program


The device works with OBD II compliant vehicles (year 96 or newer in the US). It does NOT work with OBD I vehicles. For OBD II compliant vehicles, there should be a 16 pin DLC (Diagnostic Link Connector) usually under the dash or behind ashtray AND a note on a sticker or nameplate under the hood: “OBD II compliant/certified”.

It reads check engine light trouble codes (sometimes called service engine soon).

No, it does not read or reset these. Only supports check engine light.

Check the cigar fuse of your vehicle and try on another vehicle to see if the OBD connector is in good condition.

Make sure your vehicle is OBD2 compliant, the device is plugged in well and the ignition is at ON. Also start the vehicle to try again. Try it on another vehicle to see if the device is defective or incompatible with your vehicle.

First check if you have any other dash lights on. Sometimes fault from other systems will also cause the check engine light on. Or it’s a manufacturer-specific code that is not in the code library of the device.

Please note that not all codes can be cleared in this way. For some codes (especially confirmed or permanent), if the problem causing the code hasn’t been fixed, it won’t be cleared or it may be cleared, but will come back again right away. We usually suggest that you first use the code to check your car and fix the problems.

Not all vehicles support all the OBD II modes (depends on the car manufacturer).