Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 16
Possible causes
- Spark plugs fouled when cold high
- Ignition coil weak below operating temperature medium
- Cold-start mixture too lean (fuel pressure, leaking injectors at rest) medium
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
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–600 €
- Estimated time: 0.3–3 h
- Component: spark plug
- Component: ignition coil
- Component: fuel injector
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012