P3469
Cylinder Deactivation Hydraulic Circuit Bank 1 High
The engine control module has detected an excessively high oil pressure or stuck-on signal in the bank 1 hydraulic circuit for cylinder deactivation. Either a stuck oil control valve, a blocked relief path, or a shorted pressure switch is reporting permanently high pressure.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Oil control valve stuck openCommon
- Pressure switch shortedPossible
- Blocked relief passageLess likely
Parts involved
- Oil Control Valve
- Oil Pressure Switch
P3469 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.