Engine Error
P0316
Engine Misfire Detected on Startup (First 1000 Revolutions)
Severity
Medium
Symptoms
Rough idle immediately after starting, flashing MIL on cold start
Common Causes
- Faulty spark plugs or ignition coils
- Leaking fuel injector causing rich start
- Vacuum leak affecting cold start
- Poor fuel quality
How to Fix
- 1 Inspect and replace spark plugs
- 2 Test fuel pressure drop to find leaking injectors
- 3 Check intake manifold gaskets
- 4 Drain and replace bad fuel
Estimated Repair Cost
USD
$80
–
$600
Spark plugs: $80 - $200; Injectors: $300 - $600