P0313moderate severityPowertrain
Misfire Detected with Low Fuel
on 2009 Audi TT 3.2L V6 · AWD
What this code means
Misfires detected when fuel level is low.
Symptoms
- Check Engine Light
- Rough running on low fuel
- Stalling
Common causes
- Fuel pump losing prime at low fuel level
- Fuel pickup screen clogged
- Fuel tank contamination
Diagnostic steps
- Monitor misfire counts vs fuel level
- Inspect fuel tank
- Test fuel pressure at low fuel level
Repair notes
Fill fuel tank and test. Check fuel pump and pickup.
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