P2401moderate severityPowertrain
EVAP Leak Detection Pump Control Circuit Low
on 2004 Subaru Legacy 3.0L H6 · AWD
What this code means
Low voltage on the EVAP leak detection pump control circuit.
Symptoms
- Check engine light
- Failed EVAP test
Common causes
- Short to ground
- Damaged harness
- Pump motor failure
Diagnostic steps
- Measure circuit voltage
- Check for shorts to ground
- Test pump
Repair notes
Repair short or replace pump.
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