P1451 Fuel Tank Pressure Sensor Range/Performance
What does P1451 mean on a Toyota?
P1451 — Fuel Tank Pressure Sensor Range/Performance. This Toyota-enhanced code applies to Camry, Corolla, RAV4.
Common causes of P1451
- Drifting tank pressure sensor
- Intermittent sensor connector
- Failing sensor out of calibration
- Wiring fault
- ECM reference fault
How to fix P1451
- Compare sensor readings during EVAP tests
- Wiggle-test the connector
- Test sensor output against applied pressure
- Check wiring integrity
- Replace the sensor if readings drift