Engine Error
P0451
Evaporative Emission System Pressure Sensor Range/Performance
Severity
Low
Symptoms
Check engine light, fuel odor, failed smog test
Common Causes
- Faulty fuel tank pressure sensor
- Clogged EVAP canister
- Pinched EVAP vapor line
- Damaged wiring connector
How to Fix
- 1 Replace fuel tank pressure sensor
- 2 Replace charcoal canister
- 3 Inspect and unkink vapor lines
- 4 Repair electrical connector
Estimated Repair Cost
USD
$100
–
$500
Pressure sensor: $150 - $350; Canister: $300 - $500