OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P0452?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyTank pressure sensor failed
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Tank Pressure Sensor, Sensor Wiring
Related codes
- P0451Evaporative Emission System Pressure Sensor Range/Performance
- P044FSecondary Air Injection System Switching Valve A Circuit High
- P0450EVAP System Pressure Sensor/Switch A Circuit
- P0453Evaporative Emission System Pressure Sensor High Input
- P0454EVAP System Pressure Sensor/Switch A Circuit Intermittent
- P0455Evaporative Emission System Leak Detected (Large Leak)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.