P0363
Misfire Detected - Fueling Disabled
- Severity
- High
- Driving
- Short journeys only
The module has detected a misfire severe enough that it has stopped injecting fuel into the affected cylinder. That is a deliberate protective action: unburnt fuel reaching the catalytic converter overheats and destroys it, so the module would rather run on fewer cylinders than pay for a converter. The engine will feel rough and down on power, and that is the protection working.
Possible causes
- CommonFailed ignition coil or worn spark plug on that cylinder
- CommonFailed or blocked fuel injector
- CommonLoss of compression - burnt valve, failed head gasket, worn rings
- PossibleVacuum leak affecting that cylinder
- PossibleWiring fault on the coil or injector circuit
- PossibleCamshaft or timing problem
What you might notice
- Engine running very roughly
- Significant loss of power
- Check engine light flashing
- Engine shaking at idle
- Smell of unburnt fuel
What to check, in order
- Read all codes. A misfire code names the cylinder, and that is where to start.
- Do not clear this and carry on. The module disabled that cylinder for a reason, and re-enabling it by clearing codes puts the converter back at risk.
- Check the ignition coil and spark plug for the named cylinder first - the cheapest and most likely causes.
- If ignition and fuel both check out, test compression on that cylinder. A mechanical problem is the remaining explanation.
- Have the vehicle recovered rather than driven any distance. Running on fewer cylinders loads the engine mountings and the remaining cylinders unevenly.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx
Ignition system or misfire
P0300P0301P0302P0303P0304P0305P0306P0307P0308P0309P0310P0311P0312P0313P0314P0315P0316P0317P0318P0319P0320P0321P0322P0323P0324P0325P0326P0327P0328P0329P0330P0331P0332P0333P0334P0335P0336P0337P0338P0339P0340P0341P0342P0343P0344P0345P0346P0347P0348P0349P0350P0351P0352P0353P0354P0355P0356P0357P0358P0359P0360P0361P0362P0363P0364P0365P0366P0367P0368P0369P0370P0371P0372P0373P0374P0375P0376P0377P0378P0379P0380P0381P0382P0383P0384P0385P0386P0387P0388P0389P0390P0391P0392P0393P0394