Auto User Guide

THINKCAR Thinkobd20 Automotive Code Reader User Guide

THINKCAR-LOGO THINKCAR Thinkobd20 Automotive Code Reader


Unveil the power of diagnostics with the THINKCAR Thinkobd20 Automotive Code Reader, a robust tool designed for swift vehicle troubleshooting and efficient maintenance. This compact device offers easy operation and comprehensive code-reading capabilities, making it essential for both professional mechanics and car enthusiasts.

Start Diagnostics



  • Turn the vehicle ignition on.
  • Vehicle battery voltage range should be 9-18 volts.
  • The throttle should be in a closed position.

Vehicle Connection

  1. Locate vehicle’s DLC socket: The DLC (Diagnostic Link Conn­ector) is usually located 12 inches from the centre of the steering wheel, under or around the driver’s side for most vehicles. If the DLC cannot be found, refer to the vehicle’s service manual for the location.
  2. Connect the diagnostic cable to the vehicle’s DLC, the tool will be automatically powered up.
  3. The tool is now ready to work.

FAQs for Thinkobd20 Code Reader

What vehicles are compatible with the THINKCAR Thinkobd20?

The Thinkobd20 is compatible with most 1996 US-Based, 2000 EU-Based, and newer vehicles that are OBDII compliant.

How does the Thinkobd20 connect to my vehicle?

It plugs directly into your vehicle’s OBDII port, usually found under the dashboard on the driver’s side.

Can the Thinkobd20 clear the ‘Check Engine’ light?

Yes, it can read and clear trouble codes which, if fixed, will turn off the ‘Check Engine’ light.

Does this code reader require batteries?

No, the Thinkobd20 powers directly from the vehicle’s OBDII interface—it doesn’t need batteries.

What types of diagnostics can I perform with the Thinkobd20?

It supports reading and erasing trouble codes, I/M readiness, data stream, freeze frame, and vehicle information.

How can I update the software of my Thinkobd20 device?

Connect it to a PC via USB and download the latest updates from the THINKCAR official website.

Can the Thinkobd20 read ABS or SRS codes?

No, it’s designed primarily for engine diagnostics and does not support ABS or SRS systems.

What does the I/M readiness function indicate?

This function checks the operations of the emission system on OBDII-compliant vehicles, which is essential for passing vehicle emissions testing.

Is the Thinkobd20 user-friendly for people not familiar with car diagnostics?

Absolutely, it features a simple interface with a built-in DTC lookup library to explain code meanings clearly.

What should I do if the Thinkobd20 does not power on when connected?

Ensure that the ignition is turned on and check the OBDII connection for a firm fit. If issues persist, refer to the troubleshooting section in the user manual.

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