What does code P25D3 mean?

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25D3

P25D3Exhaust Camshaft Actuator Park Lock Control Circuit / Open Bank 2

P25D3 indicates that the powertrain control module (PCM) has detected an open circuit or electrical fault in the park lock control circuit of the bank 2 exhaust camshaft actuator. This circuit is responsible for mechanically locking the camshaft phaser in a fixed position when the engine is off, and the PCM monitors the circuit for expected voltage or current levels to confirm proper operation.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.