DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25AD
P25AD indicates that the engine control module (ECM) has commanded the piston cooling oil control circuit on, but the circuit feedback indicates it remains stuck in the on state. The ECM detects this by comparing the commanded state of the oil control solenoid or valve to the actual state reported by the circuit, and it sets the code when the circuit stays energized longer than expected.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.