OBD Codes List

Diagnostic reference · P2C4B

P2C4B

Clutch Actuator Position Sensor Circuit Range/Performance

System
Powertrain control (P code)
Lamp
Check Engine Light
Category
Powertrain - Fuel/Air Metering

What it means

P2C4B means Clutch Actuator Position Sensor Circuit Range/Performance.

Where it lives

For P2C4B, start at the sensor the description names.

Check these first

  • A clutch actuator position signal that does not track clutch travel
  • An intermittent connection at the clutch actuator sensor
  • A sensor that reads erratically as the clutch moves
  • A clutch actuator that is slow or binding

What to do next

  1. Read clutch actuator position on a scan tool
  2. Compare sensor output through a full clutch sweep
  3. Check the sensor connector for an intermittent fit
  4. Test the sensor circuit for added resistance
  5. Replace the clutch actuator position sensor if its output stays skewed
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.