P3414Cylinder 2 Exhaust Valve Control Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P3414 would be set when the exhaust valves of cylinder 2 do not follow a deactivation or reactivation command on an engine with separate exhaust valve control. No manufacturer documents this code publicly. The underlying problem is described in a Ford patent: an exhaust valve that still opens after deactivation shows up as pressure changes in the exhaust, and the controller can reactivate the cylinder or block further deactivation. GM's DFM engines report a cylinder whose intake and exhaust valves stay active under their own code P3499 instead. Electrical faults on this channel are P3413, P3415 and P3416, the intake-side function code is P3410.
- What you may notice
- Check engine lamp on
- Rough running when cylinders are switched off
- Deactivation suspended by the engine computer
- Likely causes
- PossibleExhaust-side lifter or rocker of cylinder 2 not switching
- PossibleLow oil pressure or aerated oil
- RareExhaust actuator valve sticking
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.