P3415
Cylinder 2 Exhaust Valve Control Circuit Low
The engine control module has detected a low-side voltage fault (short to ground) on the cylinder 2 exhaust valve deactivation solenoid circuit. The system disables further cylinder deactivation requests until the circuit is repaired.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Wiring shorted to groundCommon
- Solenoid internal shortPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Cylinder Deactivation Solenoid
- Engine Wiring Harness
- ECM
P3415 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.