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Home / DTC / C061B — ECM Request - Forced Traction Control Disable

C061B — ECM Request - Forced Traction Control Disable

Detailed page for trouble code C061B.

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Code

C061B

Generic C — Chassis

ECM Request - Forced Traction Control Disable

Brand: Generic
Type: C — Chassis
Views: UK: 20 EN: 24 RU: 16
AI status
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Page language: EN

Causes

  • ECM commanding traction control disable (intentional request)
  • Loss of CAN or LIN communication between ECM and ABS/ESC module
  • Faulty ABS/ESC module or ECM software/firmware error
  • Defective traction control switch or driver request input
  • Wheel speed, brake, yaw, or steering angle sensor fault prompting disable
  • Low battery voltage, poor ground, or intermittent power supply

Symptoms

  • Traction control/ESC warning lamp illuminated on dash
  • Message: 'Traction control disabled' or similar
  • ABS warning or stability control lamp may also be lit
  • Possible reduced engine torque or limp-home behavior
  • Traction control will not engage during wheel slip
  • Related drivability issues if ECM has limited engine functions

What to check

  • Scan all modules and record stored/active/pendant DTCs from ECM, ABS/ESC, BCM and other modules
  • Check live data for 'TCS request' or 'ESC enable' flags in ECM and ABS modules
  • Verify battery voltage and charging system (at-rest and cranking)
  • Inspect CAN/LIN bus continuity, termination resistors and high/low voltages
  • Visually inspect wiring and connectors between ECM and ABS/ESC for corrosion, pin damage, and water intrusion
  • Check traction control switch, brake-light switch and other driver input switches for correct operation

Signal parameters

  • CAN message: ECM -> ABS/ESC TCS disable request flag (boolean)
  • Wheel speed sensor signals (Hz or speed in km/h/mph for each wheel)
  • Vehicle speed signal (derived)
  • Yaw rate and lateral acceleration values
  • Steering angle sensor position
  • Brake light switch / brake pressure status

Diagnostic algorithm

  1. Retrieve and document all DTCs from ECM, ABS/ESC, and other modules. Note freeze-frame and timestamped events.
  2. Clear codes and attempt to reproduce the condition while logging CAN messages and relevant sensor data (wheel speeds, TCS request flag).
  3. Observe if ECM sets a TCS-disable request flag in live data. If present, inspect why ECM is requesting disable (look for engine or safety faults).
  4. Check communication: verify CAN high/low voltages with key on, engine off; compare termination resistance (approx. 60 ohms across CAN_H and CAN_L).
  5. Inspect wiring and connectors between ECM and ABS/ESC for damage, corrosion or water intrusion. Wiggle-test while monitoring communication and fault status if safe.
  6. Verify operation of traction-control/ESC enable switch and brake-light switch; replace or repair faulty switches as indicated.
  7. Test wheel speed, yaw, and steering angle sensors for correct signals and plausibility. Replace or repair faulty sensors or harnesses.
  8. Check battery/ground connections and charger/regulator performance; weak supply can cause module faults and disable requests.
  9. If communication or module faults persist, consult manufacturer service information for software updates or known module adaptions; perform module reprogramming if authorized.
  10. Replace modules only after confirming wiring, power/ground and communications are good and after following manufacturer pairing/procedure steps.
  11. After repairs, clear codes and road-test while monitoring to ensure the request no longer occurs and no related DTCs return.

Likely causes

  • CAN bus message from ECM indicating disable request
  • Fault or open in traction-control/ESC enable switch or input circuit
  • Intermittent communication (U0100/U0121-style) between ECM and ABS/ESC module
  • Wheel speed sensor abnormality causing ECM to request disable
  • Low battery/weak charging system causing modules to disable functions

Fault status

⚠️ Status
ECM requested forced traction control disable — verify communications, sensor inputs, and ECM/ABS status before repair.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

C0035 C0040 C0050 C0265 C1201 U0100
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