P003C–P005C A Camshaft Profile Actuator A Control Performance/Stuck Off Bank 1
The part is not moving as commanded - physically stuck rather than electrically dead.
Can you drive it? The engine light will stay on and the car may run in a reduced-power mode. Read the freeze-frame data to see the conditions the fault was logged under.
Which code is which
Same fault, different cylinder or bank — diagnosed the same way. Several set together usually means one shared cause.
| Code | Definition | Severity |
|---|---|---|
P003C | A Camshaft Profile Actuator A Control Performance/Stuck Off Bank 1 | Investigate soon |
P003E | A Camshaft Profile Actuator A Control Performance/Stuck Off Bank 2 | Investigate soon |
P005A | B Camshaft Profile Actuator A Control Performance/Stuck Off Bank 1 | Investigate soon |
P005C | B Camshaft Profile Actuator A Control Performance/Stuck Off Bank 2 | Investigate soon |
The definition
P003C: A Camshaft Profile Actuator A Control Performance/Stuck Off Bank 1.
P003C is a powertrain code (the engine or gearbox), defined by the SAE standard - it means the same thing on any make of car, and any generic OBD-II reader will decode it.
What to check first
Cheapest and fastest checks first:
- Check the oil level and when it was last changed. These adjusters run on oil pressure and are the first thing to suffer from old or low oil.
- Check the cam adjuster solenoid and its screen for sludge.
- Only then suspect the timing chain or belt and its tensioner.
Reading the code is the easy part
A code names the circuit that complained. What tells you why is watching the sensor behind it while the engine runs — and that is where a code reader stops and a diagnostic tool starts.
VAGPULSE reads your engine ECU's fault codes and the live measuring blocks behind them, and clears the codes once you have fixed the fault. On the engine it also does what a generic OBD reader cannot on a VAG: coding, adaptations, and Stage 1–3 flashing on Bosch ME7 petrol ECUs, with a backup saved every time it reads your ECU.
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Common questions
What does P003C mean?
P003C means A Camshaft Profile Actuator A Control Performance/Stuck Off Bank 1. The part is not moving as commanded - physically stuck rather than electrically dead.
Can I drive with P003C?
The engine light will stay on and the car may run in a reduced-power mode. Read the freeze-frame data to see the conditions the fault was logged under.