OBD-II code · Powertrain (manufacturer / generic)
P34C8 Camshaft Position Control Module Performance
The dedicated camshaft position control module reports an internal performance fault — self-diagnostic flagged an issue with internal computation, drivers or sensor interfaces.
Is it safe to drive with P34C8?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyModule internal fault
- Less likelyModule software outdated, reflash may resolve
- Less likelySupply voltage outside specification
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 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cam Position Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.