P2C13B Camshaft Profile Actuator Position Sensor A Range/Performance 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
- P2C13 is the rationality test for the first exhaust profile actuator's feedback on bank 1, so the wiring is not in question. GM's L3B tracks every exhaust shift through exhaust Hall sensor 1: the reading must drop below 55 as the pin starts to fire, below 45 when it is fully out and climb above 68 once the pin is home again. If a commanded shift does not produce these states, or the sensor reports a pin event that was never requested, four bad readings out of five with the engine running and supply over 11 V result in a Type A fault (19OBDG03D, 25OBDG03B). The test is suppressed while crank or cam position faults are active. GM names P2C13 only in the keyword index of its L3B harness bulletins. Prime suspects are a sluggish pin, sludge or a worn exhaust sleeve groove.
- What you may notice
- Warning lamp on at once
- Exhaust lift locked on one profile, cylinder deactivation inactive
- Occasional clicking from the top of the engine
- Likely causes
- LikelyPin of exhaust actuator 1 slow or sticking (sludge, overdue oil change, wrong oil grade)
- PossibleWorn shift groove or weak detent on the exhaust cam sleeve
- RareHall element in actuator 1 delivering drifting levels
- 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: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.