P25D2Exhaust Camshaft Actuator Park Lock Control Circuit High (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P25D2 is set when the bank 1 exhaust phaser lock control line carries more voltage than the controller allows in the current switching state, for example because it is shorted to an ignition-fed wire or the solenoid's return is tied to supply. Most output stages detect overcurrent here and switch off, so the lock solenoid loses its command and the pin goes to the position its spring defines. The engine then runs with a fixed exhaust cam until the fault clears. No manufacturer publishes material for P25D2; the explanation uses the J2012 title, CARB's demand for electrical monitoring of output components in variable valve timing systems, and the working principle of locking phasers. Unlike the Low code, a short to power can also damage the driver.
- What you may notice
- Check engine lamp on
- Weaker mid-range pull
- Likely causes
- LikelyLock control wire shorted to an ignition-fed circuit
- PossibleSolenoid return path shorted to supply
- RareDamaged output stage in the engine control module
- 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 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.