OBD-II code guide
P0316 Misfire Detected on Startup
P0316 means the computer detected misfire events shortly after the engine started.
What it means
The misfire is happening during the first part of engine operation, often on cold start.
Common symptoms
- Rough cold start
- Shaking after startup
- Check engine light
- Fuel smell
- Hard starting
Likely causes
- Worn spark plugs
- Weak ignition coils
- Fuel injector leakage
- Coolant intrusion
- Low compression when cold
First checks
- Compare cold-start and warm-start behavior.
- Look for cylinder-specific misfire codes.
- Check coolant loss or white smoke.
- Record freeze-frame temperature data.