Engine Error
P0454
Evaporative Emission System Pressure Sensor Intermittent
Severity
Low
Symptoms
Intermittent check engine light, trouble passing readiness monitors
Common Causes
- Loose connection at the pressure sensor
- Frayed wiring harness
- Internally failing pressure sensor
- Water in EVAP lines
How to Fix
- 1 Secure sensor connector
- 2 Wiggle test and repair wiring
- 3 Replace fuel tank pressure sensor
- 4 Blow out EVAP lines with low-pressure air
Estimated Repair Cost
USD
$50
–
$350
Wiring repair: $100; Pressure sensor: $200 - $350