P25CDIntake Camshaft Actuator Park Lock Control Circuit/Open (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P25CD is the bank 2 version of the open-circuit lock fault and therefore only appears on V or boxer engines whose second cylinder bank has its own intake phaser with a separately switched lock pin. The controller finds the lock solenoid circuit on that bank interrupted or electrically implausible, so it can no longer release or set the pin deliberately. If bank 1 is free of faults, comparing both banks' lock circuits with a multimeter quickly isolates the broken side. GM's 15OBDG01 OBD table lists P25CD in its intake phaser fault bundles even though the Volt engine it covers has a single bank, which shows these entries are shared software rather than an engine-specific description. Symptoms are uneven idle and lower power from the affected bank.
- What you may notice
- Check engine lamp on
- Uneven idle
- Less power, bank 2 intake timing fixed
- Likely causes
- LikelyOpen circuit inside the bank 2 lock solenoid
- PossibleBank 2 lock solenoid connector unplugged or corroded
- PossibleWire break in the harness across the engine
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.