OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P001A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring break or unplugged connector
- PossibleActuator coil open
- Less likelyPin pushed back out of connector body
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–4 h
- Emissions test
- Likely to fail
- Parts involved
- Cam Profile Actuator, Actuator Wiring, Actuator Connector
Related codes
- P001DA Camshaft Profile Actuator A Control Circuit/Open Bank 2
- P002AB Camshaft Profile Actuator A Control Circuit/Open Bank 1
- P002DB Camshaft Profile Actuator A Control Circuit/Open Bank 2
- P2B33A Camshaft Profile Actuator B Control Circuit/Open Bank 1
- P2B36A Camshaft Profile Actuator B Control Circuit/Open Bank 2
- P2B39B Camshaft Profile Actuator B Control Circuit/Open Bank 1
- P2B3CB Camshaft Profile Actuator B Control Circuit/Open Bank 2
- P0017Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
- P0018Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
- P0019Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)
- P001BA Camshaft Profile Actuator A Control Circuit Low Bank 1
- P001CA Camshaft Profile Actuator A Control Circuit High Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.