P1339 – EVAP System Large Leak Detected
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Symptoms
- Check engine light
- Possible fuel smell
- Emissions test failure
Causes
- Missing or loose cap
- Disconnected hose
- Broken EVAP component
Diagnosis
- Inspect fuel cap
- Check hose connections
- Smoke test EVAP system
Repair
- Replace or tighten cap
- Reconnect hoses
- Replace broken components