P1225 – Fuel Tank Pressure Sensor Range/Performance
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Symptoms
- EVAP monitor not ready
- Fuel odor
- Possible rough idle
- Check engine light
- Emissions failure
Causes
- Faulty sensor
- Restricted EVAP lines
- Vent valve issue
- Charcoal canister saturated
- ECU interpretation fault
Diagnosis
- Check sensor readings
- Compare to atmospheric pressure
- Smoke test EVAP
- Check vent valve
- Scan live data
Repair
- Replace tank pressure sensor
- Repair EVAP lines
- Replace vent valve
- Replace canister
- Update ECU software