P03E9
A Camshaft Profile Actuator Position Sensor A Exceeded Learning Limit
The adaptive learning offset for camshaft profile actuator A position sensor A has reached its learning limit. Long-term mechanical wear of the cam profile lock pin or oil control valve.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Common causes
Ordered by how often each turns out to be the cause.
- Long-term wearCommon
Parts involved
- Camshaft Position Actuator
- Oil Control Valve
P03E9 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.