Driver stage controlling the exhaust cam position actuator on bank 2 reports overcurrent or overtemperature. The camshaft position sensor identifies which cylinder is on the compression stroke — without it the ECM cannot run sequential injection or coil-on-plug ignition correctly.
Medium severity. Can I keep driving?Drive little and gently. If you hear timing chain noise or the oil light comes on, shut off the engine.
Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Most likely causes
- Short circuit in actuator wiring or coil
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: hard
- It can trigger limp mode.
- It affects emissions.
What each character of P34C7 means
- P: Powertrain: engine and transmission
- 3: Generic or manufacturer code, depending on the range
- 4: Emissions
- C7: Specific fault in that system
Frequently asked questions
Can I keep driving with code P34C7?
Drive little and gently. If you hear timing chain noise or the oil light comes on, shut off the engine.
What causes code P34C7?
The most common causes are: short circuit in actuator wiring or coil.
Related codes
- P34C6B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
- P34C5A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 2
- P34C4A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.