Powertrain
generic / SAE
P001A
A Camshaft Profile Actuator A Control Circuit/Open Bank 1
Open circuit at the camshaft profile actuator (intake, profile A, bank 1). Used by systems with discrete cam-lift levels (e.g. BMW Valvetronic, Honda VTEC, Audi AVS) — the actuator that selects the lift profile cannot be driven.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 1A
Possible causes
- Wiring break or unplugged connector high
- Actuator coil open medium
- Pin pushed back out of connector body low
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–800 €
- Estimated time: 0.5–4 h
- Component: cam profile actuator
- Component: actuator wiring
- Component: actuator connector
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012