P1224 – Fuel Tank Pressure Sensor Circuit
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Symptoms
- EVAP readiness not complete
- Fuel odor
- Possible hard start
- Check engine light
- Emissions test failure
Causes
- Faulty tank pressure sensor
- Wiring issue
- Connector corrosion
- Damaged EVAP lines
- ECU fault
Diagnosis
- Inspect wiring
- Check sensor voltage
- Smoke test EVAP system
- Inspect connectors
- Scan EVAP data
Repair
- Replace tank pressure sensor
- Repair wiring
- Replace connectors
- Repair EVAP lines
- Update ECU if needed