OBD-II code · Powertrain (generic, extended)
P25DD A Camshaft Position - Stuck In Locked Position Bank 1
Camshaft phaser A on bank 1 will not unlock from its base position. The phaser stays at the park-lock angle and cannot be advanced or retarded as commanded.
Is it safe to drive with P25DD?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyPark-lock pin stuck in the locked groove
- PossibleLow oil pressure cannot push the lock pin out
- PossibleOil control valve blocked by debris
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
- 1.5–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Cam Phaser A B1, Park Lock Pin, Oil Control Valve
Related codes
- P25E0A Camshaft Position - Stuck In Locked Position Bank 2
- P25E3B Camshaft Position - Stuck In Locked Position Bank 1
- P25E6B Camshaft Position - Stuck In Locked Position Bank 2
- P25DAFuel Level Sensor C Circuit High
- P25DBFuel Level Sensor C Circuit Intermittent
- P25DCFuel Level Sensor C Stuck
- P25DEA Camshaft Position - Unable to Achieve Locked Position Bank 1
- P25DFA Camshaft Position Control Performance Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.