Symptoms of P0310
- Rough idle, shaking, or a stumble under acceleration.
- A flashing check-engine light during an active misfire.
- Power loss and higher fuel consumption.
Common causes of P0310
- Worn spark plugs, ignition coils, or plug wires.
- Fuel-delivery problems — injectors, pressure, or a lean/rich mixture.
- Vacuum leaks, low compression, or a mechanical fault in that cylinder.
Useful checks before replacing parts
- Review cylinder 10 misfire counters, freeze-frame RPM and load, fuel trims, ignition data, injector command, and compression results.
- Inspect ignition or glow components, injector circuit and flow, harness routing, intake leaks, compression, and fuel contamination.
- Identify whether the misfire occurs at idle, under load, cold start, hot restart, or with companion injector or balance codes.
Related OBD-II codes
These nearby ignition / misfire entries can help compare wording and pin down the fault area.