Traction Control Module Communication Error
There’s a communication issue between the control modules and the traction control system.
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What it means (plain English)
The traction control system isn’t talking to the other computer systems in the vehicle, causing safety features to shut off.
What the computer is actually seeing
The traction control module fails to receive or send expected signals from or to other modules, like the engine control unit (ECU) or ABS module, often expecting certain voltage levels or data packets during normal operation.
What a healthy reading looks like
The traction control module should receive a consistent data stream with voltages around 5V for signal lines and proper data communication rates (typically 10-250ms response times).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check for any visible damage to wiring and connectors related to the traction control module. Repair as needed. Decision: If wiring is damaged, fix it. If no damage found, proceed to step 2.
- 22. Verify the battery voltage is above 12.4V. Low voltage can cause communication faults. Decision: If voltage is low, charge the battery. If voltage is acceptable, proceed to step 3.
- 33. Use a scan tool to check for other related codes (like ABS or engine codes). Document any additional codes found. Decision: If there are multiple codes indicating other module failures, address those first. If only B1368 present, proceed to step 4.
- 44. Test the traction control module inputs and outputs using a multimeter. Signal voltage should be around 5V and check for data communication. Decision: If the module shows no activity or faulty outputs, replace the traction control module.
Common causes
- Faulty traction control module
- Damaged wiring or connectors
- Low vehicle battery voltage
- Faulty ABS module or communication issues
- Corroded or poor ground connections
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You can drive, but traction control features will be disabled, which may affect handling in slippery conditions. Fix it soon.
Will this code come back after clearing it?
It might, especially if there’s an underlying issue like faulty wiring or a bad module.
Why does this code pair with other codes?
Other codes can indicate related issues in the ABS or engine control modules that may also affect the traction control system.
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