P2357 code meaning
Cylinder 10 Pressure Too Low
Powertrain system Generic code P23xx codes Check engine light
What P2357 means
P2357 is not about the wiring: the pressure measured or modelled for cylinder 10 itself is below expectation while the sensor circuit tests fine. No manufacturer publishes this code, and the cylinder-1 counterpart P039A is equally undocumented. On a V10 such an evaluation also has to know when low pressure is intended – Audi's R8 V10, for instance, cuts injection and ignition on a whole bank under light and moderate load. Outside such phases, too little pressure suggests weak combustion from an injector delivering short, compression lost through a valve or worn rings, gas escaping past the glow plug seal, or a sensor reading low. Expect rough idle, more smoke and higher consumption; the cylinder 10 misfire code P0310 frequently comes along.
P2357 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyHard
- Typical labor1 to 9 hours
- Clears after repairAfter a drive cycle
Symptoms of P2357
- Check engine light on
- Rough running, mainly at idle
- More smoke and higher fuel consumption
Common causes of P2357
- PossibleInjector of cylinder 10 delivering too little fuel
- PossibleCompression loss from valve leakage or worn rings
- PossibleCombustion gas leaking past the glow plug seal
- Less likelyPressure sensor reading too low
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 moduleFuel injector
What each part of P2357 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. |
| 57 | The exact fault in that area. |
What to do next
- Note P2357 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 P2357
What does P2357 mean?
P2357 means "Cylinder 10 Pressure Too Low". P2357 is not about the wiring: the pressure measured or modelled for cylinder 10 itself is below expectation while the sensor circuit tests fine. It is a generic code, so it means the same on every make.
Is it safe to drive with P2357?
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 P2357 fail an emissions test?
Yes, it can. P2357 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 P2357 to fix?
Difficulty: hard. A typical repair takes 1 to 9 hours of work. This is a job for a workshop.
Will P2357 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.