P2C1CB Camshaft Profile Actuator Position Sensor C Circuit Low Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2C1C is reserved for a circuit-low fault, typically a short to ground, in the feedback of exhaust position sensor C on bank 1. It is not used in any public manufacturer documentation. GM's L3B tables show how its siblings work: P2C14 and P2C18 compare the line against ground with the driver on and declare a short at 0.5 ohm or less in four of five samples. Because that engine carries only two exhaust Hall sensors, the C position is not populated. CARB's comprehensive component rules would require a manufacturer that fits a third exhaust actuator to detect such out-of-range input. If it ever appears, check for chafed insulation and moisture at the actuator plug before replacing parts.
- What you may notice
- MIL on
- No change of exhaust cam profile
- Likely causes
- LikelySensor C wire chafed through to ground
- PossibleShorted actuator or position sensor
- RareMoisture in the actuator connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.