P0313moderate severityPowertrain
Misfire Detected with Low Fuel
on 2000 BMW 525i 2.5L I6 M54 · RWD
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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Other Powertrain codes on this vehicle
29CC
Misfire Cylinder 1
29CD
Misfire Cylinder 2
29CE
Misfire Cylinder 3
29CF
Misfire Cylinder 4
29D0
Misfire Cylinder 5
29D1
Misfire Cylinder 6
29D2
Misfire Cylinder 7
29E0
Lambda Additive/Idle Adaptation Limit, Bank 1
29E1
Lambda Additive/Idle Adaptation Limit, Bank 2
29E2
Lambda Multiplicative Part-Load Adaptation Limit, Bank 1