P3416Cylinder 2 Exhaust Valve Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P3416 means the control line of a separate cylinder 2 exhaust valve actuator sits too high, typically because it touches a supply voltage or the coil has shorted turns. No manufacturer documents this code publicly. The closest published test is GM's for the intake-side P3412 on the L84: once the output stage is active, any resistance to supply below 0.5 ohm is a failure, and 20 hits out of 25 lead to a Type B entry. NHTSA's review of GM's DFM V8 describes one valve lifter oil solenoid per cylinder that serves intake and exhaust alike, which is why such engines need no exhaust-only code. CARB requires shorts in outputs to be detected. Related: P3413 open, P3415 short to ground, P3408 for cylinder 1.
- What you may notice
- Check engine lamp on
- Engine stays in full-cylinder mode
- Likely causes
- PossibleActuator control wire shorted to a supply line
- PossibleShorted turns in the cylinder 2 exhaust actuator coil
- RareEngine control module output stage fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.