P0496 – EVAP Flow During Non‑Purge
Description
The EVAP system is flowing when it should not be purging.
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Compare Diagnostic ScannersSymptoms
- Hard starting
- Rough idle
- Poor acceleration
- Fuel smell
- Check engine light
Causes
- Stuck purge valve
- Faulty vent valve
- Vacuum leak
- Charcoal canister issue
- ECU issue
Diagnosis
- Test purge valve
- Inspect vent valve
- Check vacuum lines
- Scan live data
- Inspect canister
Repair
- Replace purge valve
- Replace vent valve
- Fix vacuum leaks
- Replace canister
- Update ECU
