OBD-II code · Powertrain (generic)
P03F3 B Camshaft Profile Actuator C Control Circuit High (Bank 1)
B Camshaft Profile Actuator C Control Circuit High (Bank 1): the control-circuit voltage is above the expected range. This relates to engine timing; a fault can cause rough running, a no-start, or timing errors.
Is it safe to drive with P03F3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyShort to B+
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
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
- Best left to a mechanic
- Typical labour
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Camshaft Position Actuator
Related codes
- P03EEA Camshaft Profile Actuator C Control Circuit High (Bank 1)
- P03F1B Camshaft Profile Actuator C Control Circuit/Open (Bank 1)
- P03F0A Camshaft Profile Actuator C Control Stuck On (Bank 1)
- P03F2B Camshaft Profile Actuator C Control Circuit Low (Bank 1)
- P03F4B Camshaft Profile Actuator C Control Performance/Stuck Off (Bank 1)
- P03F5B Camshaft Profile Actuator C Control Stuck On (Bank 1)
- P03F6B Camshaft Position Actuator Position Sensor C Circuit (Bank 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.