P2C05A Camshaft Profile Actuator Position Sensor A Circuit 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
- Engines with switchable cam lobes use small solenoid actuators that push a pin into a groove of a sliding cam sleeve; a feedback signal confirms that the pin has moved. P2C05 is the general circuit fault for feedback A on the intake camshaft (camshaft A) of bank 1. GM uses it on the 2.7 L turbo four L3B in the Silverado and Sierra 1500 from 2019: in tables 19OBDG03D and 25OBDG03B the ECM tests the circuit while the output is energised and reports an open circuit at 200 kilohms or more between signal and ground in 4 of 5 samples, with supply above 11 V, as Type A with MIL on the first trip. Low and High are P2C07 and P2C08. GM bulletins PIT5677 and 21-NA-149 trace such codes on the L3B to engine harness chafing and blown fuses. Lift changes are locked out.
- What you may notice
- Check engine light on immediately
- Cam lift switching and cylinder deactivation unavailable, slightly reduced power or economy
- With harness damage, many other codes and possibly no start
- Likely causes
- LikelyEngine harness chafed, sometimes with blown fuses (GM L3B bulletins)
- PossibleLoose or corroded connector at the profile actuator
- PossibleOpen circuit inside the actuator or its feedback element
- 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.