P2C0CA Camshaft Profile Actuator Position Sensor B Circuit High 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
- A short from the sensor B line to a voltage source triggers P2C0C. The sensor is the Hall feedback built into the second intake profile actuator on bank 1. For the L3B four in 2019 and later Silverado and Sierra 1500 trucks, GM tests with the output stage off; a reading of no more than 0.5 ohm against controller power, found four times in five checks while the supply exceeds 11 V and the key is in crank or run, gives a Type A code with MIL in the first trip (19OBDG03D, 25OBDG03B). Bulletins PIT5677 and 21-NA-149 include P2C0C in their main list for harness chafing at the camshaft carrier, the air cleaner housing and the left shock tower, where blown fuses can accompany the codes. An actuator whose position cannot be read is excluded from shifting. Ground short: P2C0B, open: P2C09.
- What you may notice
- MIL on in the first trip
- Cam profile switching and cylinder deactivation unavailable
- With harness damage, further codes, rough running or no start
- Likely causes
- LikelyChafed harness bringing the line against a powered wire (GM PIT5677, 21-NA-149)
- PossibleInternal short to supply in actuator 2
- RareECM output stage defective
- 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.