Powertrain
generic or reserved
P3470
Cylinder Deactivation Hydraulic Circuit Bank 2 Open
The engine control module has detected an open hydraulic circuit in the cylinder deactivation system on bank 2. Loss of oil flow, a failed oil pressure switch or a disconnected oil control valve prevents the system from deactivating cylinders on bank 2.
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / 70
Possible causes
- Oil pressure switch failed high
- Oil passage blocked or sludge buildup medium
- Oil control valve stuck medium
Inspection / repair
- Difficulty: shop only
- DIY: shop recommended
- Estimated cost: 300–2000 €
- Estimated time: 2–10 h
- Component: oil control valve
- Component: oil pressure switch
- Component: lifter
- Component: engine oil passage
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012