P3473Cylinder 10 Deactivation/Intake Valve Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P3473 reports an open circuit to the deactivation or intake valve actuator of cylinder 10, the last cylinder of a V10. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. The V10 engines known for cylinder shut-off are Audi's 5.2 FSI in the R8 and Lamborghini's Huracán from model year 2016. Audi says its system idles one bank in the upper four gears by switching off injection and ignition, so it needs no valve actuator that this code could watch. On a twelve-cylinder engine with valve deactivation the code would mean a broken wire, an open coil or a bad connector at cylinder 10. P3475 and P3476 deal with shorts, P3474 with the mechanical result, P3477 with the exhaust valve.
- What you may notice
- Check engine lamp on
- Engine no longer switches to reduced-cylinder mode
- Likely causes
- LikelyWire to the cylinder 10 actuator open or chafed
- PossibleCylinder 10 solenoid coil open
- PossibleCorroded or loose connector at cylinder 10
- RareEngine control module driver 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.