P3410Cylinder 2 Deactivation/Intake 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
- P3410 covers a cylinder 2 deactivation system that is electrically intact but does not do what is commanded, such as valves that keep opening or fail to return. No manufacturer documents this code publicly. GM checks this behavior on the L84 under its own code P3499, by watching manifold pressure while cylinder 2 should be off; Ford uses the matching cylinder 1 code P3402. GM bulletin 21-NA-036 for 3.6 L V6 engines shows how such faults appear in practice: oil leaking past the control valve or rockers that do not latch cause misfires on cylinder 2 (P0302). Circuit faults belong to P3409, P3411 and P3412. Expect roughness and lost economy.
- What you may notice
- Misfire on cylinder 2, often after a reduced-cylinder phase
- Check engine lamp on
- Vibration at light load
- Likely causes
- LikelyOil bleeding past the control valve seal, pressure lost
- PossibleRocker or lifter of cylinder 2 not latching
- PossibleLow or degraded oil
- RareBroken solenoid tip left in the bore keeps a new valve from seating
- 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.