OBD-II code · Powertrain (generic, extended)
P235C Cylinder 11 Pressure Sensor Circuit
A general electrical fault on the cylinder 11 combustion pressure sensor — used on engines with closed-loop combustion control (e.g. some Volvo and BMW direct-injection diesels) to measure cylinder pressure directly via a sensor at the glow plug or injector position.
Is it safe to drive with P235C?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyOpen circuit in sensor or wiring
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5 h
- Emissions test
- Likely to fail
- Parts involved
- Cylinder Pressure Sensor 11
Related codes
- P0395Cylinder 1 Pressure Sensor Circuit
- P039FCylinder 2 Pressure Sensor Circuit
- P03A9Cylinder 3 Pressure Sensor Circuit
- P03B3Cylinder 4 Pressure Sensor Circuit
- P03BDCylinder 5 Pressure Sensor Circuit
- P03C7Cylinder 6 Pressure Sensor Circuit
- P03D1Cylinder 7 Pressure Sensor Circuit
- P03DBCylinder 8 Pressure Sensor Circuit
- P2348Cylinder 9 Pressure Sensor Circuit
- P2352Cylinder 10 Pressure Sensor Circuit
- P2366Cylinder 12 Pressure Sensor Circuit
- P2359Ignition Coil L Secondary Circuit
- P235ACylinder 10 Pressure Variation High
- P235BCylinder 10 Combustion Performance
- P235DCylinder 11 Pressure Sensor Circuit Range/Performance
- P235ECylinder 11 Pressure Sensor Circuit Low
- P235FCylinder 11 Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.