P2366Cylinder 12 Pressure Sensor Circuit
- 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
- P2366 is the general circuit code for the combustion pressure sensor of cylinder 12; it does not tell whether the signal sits too low or too high. Twelve is the highest number on a V12 or W12. Whether a maker counts bank by bank or along the crankshaft, number 1 is normally the front cylinder, which places 12 at the opposite end of the engine. No twelve-cylinder engine with pressure-sensing glow plugs is publicly documented, so no manufacturer describes P2366; CARB's demand for circuit continuity checks and the cylinder-1 code P0395 frame it. A 2014 Volkswagen bulletin for its 2.0 TDI advises a push-and-pull test of the plug connector before any part is replaced, since a poorly seated connector is often the real culprit. The engine usually runs as before.
- What you may notice
- Check engine light on
- Pressure reading for cylinder 12 missing or fixed in live data
- Likely causes
- LikelyGlow plug connector not fully latched or loose
- PossibleDamaged wire in the harness branch to the rearmost cylinder
- PossiblePressure-sensing glow plug faulty
- 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: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.