Powertrain
generic / SAE
P0452
Evaporative Emission System Pressure Sensor Low Input
The fuel tank pressure sensor signal is below the expected minimum voltage. Often caused by a failed sensor or a short to ground in the signal line.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 52
Possible causes
- Tank pressure 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: 80–400 €
- Estimated time: 0.5–2.5 h
- Component: fuel tank pressure sensor
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012