Powertrain
generic or reserved
P3457
Cylinder 7 Deactivation
The engine control module has detected a fault in the cylinder 7 deactivation system. Cylinder 7 cannot reliably switch between active and deactivated state.
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / 57
Possible causes
- Deactivation solenoid failed high
- Lifter stuck medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–2000 €
- Estimated time: 2–10 h
- Component: cylinder deactivation solenoid
- Component: lifter
- Component: engine wiring harness
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012