Powertrain
generic / SAE
P0450
EVAP System Pressure Sensor/Switch A Circuit
A general electrical fault on EVAP pressure sensor/switch A — used to monitor canister pressure during leak-detection diagnostics.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 50
Possible causes
- Sensor failed high
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.5–2 h
- Component: evap pressure sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012