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DTC codes / C06xx · Brakes, steering and suspension / C061C

C061CVariable Effort Steering Actuator Control Circuit/Open

The variable effort steering actuator control circuit is the electrical path the steering control module uses to command the actuator that varies steering assist. Code C061C is set when the module detects an open circuit on that control circuit, meaning it sees no complete electrical path to the actuator. The module stores the code and typically disables variable assist, leaving steering at a fixed effort level.

SystemChassis
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaBrakes, steering and suspension

Symptoms you may notice

  • Steering effort feels heavier than normal, especially at low speed or during parking maneuvers
  • Steering assist may feel stuck at one level and not change with vehicle speed
  • The stability or traction control warning light may illuminate along with the steering warning
  • A message such as 'Service Power Steering' or 'Steering Assist Reduced' may appear on the driver information display
  • Often no symptoms besides the warning light, because the system defaults to a fixed assist level that still allows safe steering

Common causes, most likely first

  1. Broken, chafed, or disconnected wire in the actuator control circuit, commonly at a flex point or near a connector
  2. Corroded or loose electrical connector at the steering actuator or at the control module
  3. Failed variable effort steering actuator solenoid or motor winding
  4. Open circuit inside the steering control module driver for the actuator circuit
  5. Poor ground connection shared by the steering actuator circuit
  6. Aftermarket accessories or previous repairs that disturbed the steering wiring harness

How to diagnose and fix it

  1. Scan all modules and record freeze-frame data to confirm C061C is current and not a history code from a past event
  2. Inspect the actuator connector and control module connector for corrosion, pushed-back pins, or loose terminals
  3. Perform a wiggle test on the actuator harness while watching live actuator command and feedback data to expose an intermittent open
  4. Measure resistance of the control circuit from the module connector to the actuator connector and compare with the manufacturer's specification
  5. Check circuit voltage and ground integrity at the actuator with the key on and the module commanding the actuator
  6. If wiring and connectors pass, substitute a known-good actuator or perform the manufacturer's actuator functional test before condemning the module
  7. Clear the code and verify repair by road-testing while monitoring variable assist operation and confirming the code does not return

What the open circuit really tells you

  • An open circuit code does not automatically mean the actuator has failed, because a rubbed-through wire or a corroded pin can set the same code while the actuator itself is healthy.
  • The variable effort steering actuator is often integrated into the steering gear or column, so technicians sometimes replace an expensive assembly when the real fault is a chafed harness near a body seam.
  • A weak or shared ground can mimic an open control circuit, so voltage-drop testing the ground side is as important as checking the control wire itself.
  • Some vehicles set C061C after battery replacement or steering module programming if the actuator calibration is not completed, so a relearn may be required after repairs.
  • The code can be stored as history by a momentary open during hard cornering or suspension travel, so always check whether it is current before starting parts replacement.

Can I keep driving with C061C?

The vehicle remains steerable because the system defaults to a fixed assist level, but steering effort may be higher than expected, particularly at low speeds. Avoid aggressive evasive maneuvers and have the circuit inspected soon, since an intermittent open can change steering feel without warning.

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.

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