OBD-II code · Powertrain (generic)
P003F A Camshaft Profile Actuator A Control Stuck On Bank 2
The intake cam profile actuator (profile A, bank 2) stays engaged when commanded off — stuck in high-lift profile. Idle quality and emissions affected.
Is it safe to drive with P003F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLocking pin stuck engaged
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
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
- 0.5–5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cam Profile Actuator, Oil Control Valve
Related codes
- P003DA Camshaft Profile Actuator A Control Stuck On Bank 1
- P005BB Camshaft Profile Actuator A Control Stuck On Bank 1
- P005DB Camshaft Profile Actuator A Control Stuck On Bank 2
- P2B53A Camshaft Profile Actuator B Control Stuck On Bank 1
- P2B54A Camshaft Profile Actuator B Control Stuck On Bank 2
- P2B55B Camshaft Profile Actuator B Control Stuck On Bank 1
- P2B56B Camshaft Profile Actuator B Control Stuck On Bank 2
- P003CA Camshaft Profile Actuator A Control Performance/Stuck Off Bank 1
- P003EA Camshaft Profile Actuator A Control Performance/Stuck Off Bank 2
- P0040O2 Sensor Signals Swapped Bank 1 Sensor 1/Bank 2 Sensor 1
- P0041O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2
- P0042HO2S Heater Control Circuit Bank 1 Sensor 3
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.