Technical Definition:
Evaporative Emission System Pressure Sensor/Switch Low
Trouble Code: P0452
Address: 0x0452
System: Powertrain
Subsystem:
Address: 0x0452
System: Powertrain
Subsystem:
Technical Description:
Possible Causes:
- Failed fuel tank pressure sensor
- Harness to the sensor has an open or short circuit
- Faulty electrical connection to the FTP sensor
- Cracked or broken vapor line to the vacuum canister
- Cracked or broken positive vapor line to the tank
- Plugged line
- Leaky gasket at the fuel pump module
- Gas cap left loose resulting in a loss of vacuum
- Pinched vapor line
Possible Symptoms:
Evaporative Emission Control System Pressure Sensor Low Input
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Evaporative Emission System (EVAP) Pressure sensor
– Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
– Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection