P2354Cylinder 10 Pressure Sensor Circuit 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
- P2354 reports that the signal of the cylinder 10 pressure sensor stays below its lower limit. The pattern known for this fault type comes from Saab's 9-5 diesel with its GM 2.0 engine: its low codes for the four cylinders (P0397 on cylinder 1) demand that a running engine sees the signal under the threshold for longer than 2 s, run once per trip and are Type B, so the MIL waits for a second failed trip. For cylinder 10 no manufacturer publishes the code. A quick check from that procedure: with the sensor connector unplugged, the scan tool should show more than 10,000 kPa; a lower reading points to a signal wire shorted to ground. A missing 5 V reference pulls the value down as well. On V10 engines cylinder 10 is the last one of its bank, so the plug is often awkward to reach.
- What you may notice
- Check engine light after the second faulty trip
- Scan tool shows peak pressure near zero for cylinder 10
- Driving behaviour normally unchanged
- Likely causes
- LikelySignal wire shorted to ground, e.g. chafed on the cylinder head
- Possible5 V reference interrupted or shorted to ground
- PossibleInternal fault of the pressure-sensing glow plug
- 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.