Cylinder 12 Pressure Sensor Circuit
A general electrical fault on the cylinder 12 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.
Affected components
- Cylinder pressure sensor 12
Common causes
- High likelihood: Open circuit in sensor or wiring
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.