OBD-II code · Powertrain (generic)
P0316 Engine Misfire Detected on Startup (First 1000 Revolutions)
The misfire monitor detected misfires during the first 1000 revolutions after startup but the engine then settled. Often caused by fouled spark plugs that warm up clean, weak ignition coils, or a borderline cold-start fuel mixture.
Is it safe to drive with P0316?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySpark plugs fouled when cold
- PossibleIgnition coil weak below operating temperature
- PossibleCold-start mixture too lean (fuel pressure, leaking injectors at rest)
Symptoms
- Check engine light on or flashing
- Rough idle and uneven running
- Power loss, hesitation under acceleration
- Increased fuel consumption
- Possible smell of unburned fuel from exhaust
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Spark Plug, Ignition Coil, Fuel Injector
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.