P2354 code meaning
Cylinder 10 Pressure Sensor Circuit Low
Powertrain system Generic code P23xx codes Check engine light
What P2354 means
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.
P2354 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2354
- Check engine light after the second faulty trip
- Scan tool shows peak pressure near zero for cylinder 10
- Driving behaviour normally unchanged
Common causes of P2354
- Most 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
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Cylinder pressure sensor glow plugSensor wiringEngine control module
What each part of P2354 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 3 | Area: ignition system or misfire. |
| 54 | The exact fault in that area. |
What to do next
- Note P2354 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2354
What does P2354 mean?
P2354 means "Cylinder 10 Pressure Sensor Circuit Low". P2354 reports that the signal of the cylinder 10 pressure sensor stays below its lower limit. It is a generic code, so it means the same on every make.
Is it safe to drive with P2354?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2354 fail an emissions test?
Yes, it can. P2354 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2354 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3.5 hours of work. This is a job for a workshop.
Will P2354 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.