Hours: 07–23 daily

TuningBot DTC Database · v4.37.15

P25AC Piston Cooling Oil Control Circuit Performance/Stuck Off

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEngineOBD2

What P25AC means

P25AC
Piston Cooling Oil Control Circuit Performance/Stuck Off Generic · engine Data confidence 65%

The control module determined that the Piston Cooling Oil Control Circuit Performance/ did not change state as commanded and appears stuck.

Related and nearby codes

How to read P25AC

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

5AC

Specific fault index within the subsystem.

Frequently asked questions about P25AC

What does P25AC mean?

Piston Cooling Oil Control Circuit Performance/Stuck Off. The control module determined that the Piston Cooling Oil Control Circuit Performance/ did not change state as commanded and appears stuck.

Is P25AC generic or manufacturer-specific?

P25AC is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P25AC at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

← Search the full DTC database