Powertrain
generic or reserved
P3435
Cylinder 4 Deactivation Stuck On
The engine control module has detected that cylinder 4 deactivation hardware is stuck in the active state. Cylinder 4 stays deactivated when full-cylinder operation is commanded.
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / 35
Possible causes
- Solenoid stuck in deactivation position high
- Lifter stuck collapsed medium
- Carbon or debris buildup preventing free movement low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–2000 €
- Estimated time: 2–10 h
- Component: cylinder deactivation solenoid
- Component: lifter
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012