P1341 – EVAP System Purge Valve Performance
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Symptoms
- Check engine light
- Slight rough idle
- Emissions failure
Causes
- Weak purge valve
- Sticking valve
- Vacuum leak
- ECU control issue
Diagnosis
- Command purge valve
- Check vacuum lines
- Inspect valve movement
Repair
- Replace purge valve
- Repair vacuum leaks
- Update ECU if needed