OBD-II code · Powertrain (manufacturer / generic)
P34C4 A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
The driver stage controlling the intake cam position actuator on bank 1 reports overcurrent or overtemperature, triggering thermal shutdown to protect the electronics.
Is it safe to drive with P34C4?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyShort circuit in actuator wiring or coil
- PossibleActuator mechanically seized, drawing high current
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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–8 h
- Emissions test
- Likely to fail
- Parts involved
- Cam Actuator A Driver B1, Cam Actuator A B1
Related codes
- P34C5A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 2
- P34C6B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
- P34C7B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 2
- P34C1B Camshaft Position Actuator Position Sensor A Range/Performance Bank 2
- P34C2B Camshaft Position Actuator Position Sensor A Circuit Low Bank 2
- P34C3B Camshaft Position Actuator Position Sensor A Circuit High Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.