Engine Error
P0452
Evaporative Emission System Pressure Sensor/Switch Low
Severity
Low
Symptoms
Fuel odor, check engine light, failed smog test
Common Causes
- Faulty fuel tank pressure sensor
- Short to ground in sensor wiring
- Defective EVAP pressure sensor connector
- Extreme vacuum in fuel tank
How to Fix
- 1 Test and replace fuel tank pressure sensor
- 2 Repair wiring harness short
- 3 Clean and secure sensor connector
- 4 Check EVAP vent valve operation
Estimated Repair Cost
USD
$100
–
$400
Pressure sensor replacement: $150 - $400