P2363Cylinder 11 Pressure Variation Low
- 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
- P2363 flags a cylinder 11 pressure signal with too little swing between its low point and the combustion peak. No manufacturer documents this code; cylinder 11 only exists on twelve-cylinder engines, none of which is publicly known with pressure-sensing glow plugs. Saab's 9-5 diesel files the related P039C for cylinder 1 as a Type B signal fault. A flat signal is mostly a sensor matter – the piezo-resistive element has lost sensitivity, or deposits hold the heater rod in place – while a genuine lack of compression in the cylinder is less likely. In Lamborghini's Aventador V12, firing 1-12-4-9-2-11-6-7-3-10-5-8, cylinder 11 is the sixth to fire; the older Lamborghini V12 fired it last. Apart from the warning lamp the driver rarely notices anything.
- What you may notice
- Check engine light on
- Engine runs normally in most cases
- Likely causes
- LikelyPiezo-resistive sensing element has lost sensitivity
- PossibleDeposits holding the heater rod in place
- RareGenuinely low compression in cylinder 11
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €550
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.