Faulty wheel speed sensor or damaged sensor wiring; Malfunctioning steering angle sensor; Low or uneven tire pressure; Defective yaw rate sensor or lateral acceleration sensor; Engine control module (ECM) software issue or internal fault; Communication error between ECM and traction control module (CAN bus issue); Brake pedal position sensor misalignment or failure

DTC codes / C06xx · Brakes, steering and suspension / C061B

C061BECM Request - Forced Traction Control Disable

Q: What does code C061B mean?

ECM Request - Forced Traction Control Disable. This code indicates that the engine control module (ECM) has sent a request to the traction control system to force a disable of traction control, and the system has stored this request as a fault. The ECM typically makes this request when it detects a condition that could make traction control intervention unsafe or when it needs to prioritize engine control, but the code means the request was made and recorded, not necessarily that a failure has occurred.

This code indicates that the engine control module (ECM) has sent a request to the traction control system to force a disable of traction control, and the system has stored this request as a fault. The ECM typically makes this request when it detects a condition that could make traction control intervention unsafe or when it needs to prioritize engine control, but the code means the request was made and recorded, not necessarily that a failure has occurred.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Symptoms you may notice

Traction control warning light illuminated on the dashboard
Traction control system may be completely inoperative
Anti-lock brake system (ABS) light may also be on if the systems are integrated
Often no symptoms besides the warning light
Reduced engine power or limp mode in some vehicles
Cruise control may be disabled

Common causes, most likely first

Faulty wheel speed sensor or damaged sensor wiring
Malfunctioning steering angle sensor
Low or uneven tire pressure
Defective yaw rate sensor or lateral acceleration sensor
Engine control module (ECM) software issue or internal fault
Communication error between ECM and traction control module (CAN bus issue)
Brake pedal position sensor misalignment or failure

How to diagnose and fix it

Inspect and correct tire pressures and ensure all tires are the same size and condition
Use a scan tool to read all stored codes in the ABS/traction control module and ECM, and record freeze frame data
Visually inspect wheel speed sensor wiring and connectors for damage or corrosion
Test wheel speed sensors with a multimeter or oscilloscope for proper signal
Check steering angle sensor calibration and perform a zero-point reset if needed
Verify battery voltage and ground connections to the ECM and traction control module
If all else checks out, reprogram or replace the ECM or traction control module as per manufacturer procedures

What the ECM is really telling you

This code often sets as a result of another underlying fault, such as a wheel speed sensor issue, so always diagnose other codes first.
A forced traction control disable request can be triggered by a mismatched tire size or excessive wheel spin on a dyno, not just a hard part failure.
Some vehicles set this code when the battery is disconnected or voltage is low, and it may clear after a few drive cycles if no other faults exist.
The ECM may request traction control disable to protect the drivetrain during certain engine fault conditions, so ignoring it could mask a more serious engine problem.
Misdiagnosis is common when technicians replace the traction control module without checking the ECM's reason for the request, which is often documented in freeze frame data.

Can I keep driving with C061B?

You can generally continue driving if the only symptom is the warning light, but traction control and stability control may be disabled, so drive cautiously in slippery conditions. Avoid aggressive acceleration or sharp turns until the fault is diagnosed and repaired.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.