P27C4
Pressure Control Solenoid P Intermittent
Pressure control solenoid P shows intermittent electrical or hydraulic faults.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Solenoid connector not fully seatedCommon
- Coil resistance drifts with temperaturePossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- Pressure Control Solenoid P
- Wiring Harness
P27C4 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.