P0316moderate severityPowertrain
Engine Misfire Detected on Startup (First 1000 Revolutions)
on 2001 Audi A6 3.0L V6 · AWD
What this code means
Misfire detected during the first 1000 engine revolutions after startup.
Symptoms
- Check Engine Light after cold start
- Rough start then smooths out
- Stumble on startup
Common causes
- Leaking fuel injector (dripping when off)
- Loss of fuel pressure after shutdown
- Spark plug fouled from previous shutdown
Diagnostic steps
- Perform fuel pressure leak-down test
- Check injectors for leaks
- Inspect spark plugs
- Monitor misfire counts on cold start
Repair notes
Check for leaking injectors. Replace fouled spark plugs.
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