P2355Cylinder 10 Pressure Sensor Circuit High
- 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
- P2355 means the cylinder 10 pressure signal is stuck above its upper limit. Taking the Saab 9-5 diesel with GM's 2.0 engine as the model, the Type B high codes for its four cylinders (P0398 on cylinder 1) wait until the signal has stayed above the threshold for over 2 s with the engine running. An interrupted signal or low reference circuit lets the input float upward, and the scan tool then displays a fixed 10,000 kPa instead of a value inside the normal 0 to 9,000 kPa. Saab's way to tell wiring from sensor: bridge signal and low reference at the harness plug with a fused jumper; the reading must then fall below 50 kPa, otherwise the fault lies in the harness or the ECM. No manufacturer documents P2355 for cylinder 10 itself; P2354 is the low counterpart.
- What you may notice
- Check engine light after two trips
- Peak pressure for cylinder 10 frozen at a very high value
- No obvious driveability complaint
- Likely causes
- LikelySignal or low reference wire open, connector pulled off
- PossibleSignal or reference shorted to a voltage source
- RareSensor electronics driving the output high
- 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 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.