DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25AE
P25AE indicates that the engine control module has detected the piston cooling oil pressure is below the expected threshold for current operating conditions. The engine control module monitors a dedicated oil pressure sensor in the piston cooling circuit and sets this code when the signal indicates insufficient pressure to properly cool the pistons.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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