P3469Cylinder 9 Exhaust Valve Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P3469 is set when the circuit driving a separate exhaust valve actuator on cylinder 9 is open. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. A distinct exhaust actuator only exists where intake and exhaust valves are switched independently; a GM patent at least shows that the exhaust valves can follow their own timing, being deactivated before the intake valves and reactivated before them too. GM's own production system uses one solenoid per cylinder for both valves, and the publicly described ten- and twelve-cylinder systems (Audi R8 V10, Bentley W12) keep the valves moving altogether. So an open circuit here can only concern an engine that carries such hardware. P3471 and P3472 report shorts, P3470 a functional fault, P3465 the intake side.
- What you may notice
- Check engine lamp on
- Cylinder shut-off blocked
- Likely causes
- PossibleOpen or chafed wire to the cylinder 9 exhaust actuator
- PossibleExhaust actuator coil of cylinder 9 open
- PossibleConnector at the exhaust actuator loose or corroded
- RareEngine control module output failed
- 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.