P03E6A Camshaft Position Actuator Position Sensor C 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
- On some engines the intake cam phaser (camshaft position actuator A) has its own position sensors, which tell the engine module where the phaser actually is; sensor C is the third of them, bank 1 the side with cylinder 1. P03E6 means the sensor signal is electrically valid but implausible – for example the number or position of its edges per engine cycle does not match the crankshaft sensor, it jumps, or it lies outside the phaser's adjustment range. No manufacturer document available to us uses this code. GM's 2.7-litre engine monitors comparable position sensors on its sliding camshaft under other codes (P2C05 ff), with an open circuit above 200 kΩ and a short below 0.5 Ω in 4 of 5 samples – only as a comparison. Typical causes are a dirty sensor or wrong air gap, a damaged or wrongly fitted phaser, or interference.
- What you may notice
- Check engine light on
- Cam phasing held in its base position, loss of power
- Possibly rough idle or higher consumption
- Likely causes
- LikelySensor dirty (metal debris on the magnet) or air gap wrong
- PossiblePhaser or sensor target damaged or wrongly fitted (timing)
- PossibleLoose contact or interference
- PossibleSensor faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.