Powertrain
generic or reserved
P3408
Cylinder 1 Deactivation Circuit Low Voltage
The engine control module has detected low voltage on the cylinder 1 deactivation control circuit. Variant of P3404 reported on platforms with separate diagnostic ranges.
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / 08
Possible causes
- Wiring shorted to ground high
- Solenoid internally shorted medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 1–4 h
- Component: cylinder deactivation solenoid
- Component: engine wiring harness
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012