P3483Cylinder 11 Deactivation/Intake Valve Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P3483 is stored for a low signal on the control circuit of the cylinder 11 deactivation or intake valve actuator, in practice a short to ground. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. Cylinder 11 exists only on twelve-cylinder engines; among those with shut-off are Bentley's W12, Lamborghini's Aventador V12 and, historically, Mercedes' M137. GM's analogous V8 test treats under 0.5 ohm to ground with the driver off as a fault once 20 of 25 samples agree, with the enable conditions of 11 V system voltage and 425 rpm. A grounded line can energise the actuator continuously and take cylinder 11 out at the wrong time. Siblings: P3481 (open) and P3484 (high).
- What you may notice
- Check engine lamp on
- Cylinder shut-off disabled
- Possible misfire on cylinder 11
- Likely causes
- LikelyCylinder 11 control line shorted to ground
- PossibleCylinder 11 actuator shorted internally
- RareMoisture at the actuator connector
- RareEngine control module output faulty
- 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.