Powertrain
generic or reserved
P3474
Cylinder Deactivation Hydraulic Circuit Bank 2 High
The engine control module has detected an excessively high oil pressure or stuck-on signal in the bank 2 hydraulic circuit for cylinder deactivation. A stuck oil control valve, a blocked relief path or a shorted pressure switch is reporting permanently high pressure on bank 2.
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / 74
Possible causes
- Oil control valve stuck open high
- Pressure switch shorted medium
- Blocked relief passage low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1.5–7 h
- Component: oil control valve
- Component: oil pressure switch
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012