P0454 CHEVROLET - Fuel Tank Pressure Sensor Intermittent
- Faulty Fuel Tank Pressure (FTP) Sensor
- Fuel Tank Pressure (FTP) Sensor harness is open or shorted
- Fuel Tank Pressure (FTP) Sensor circuit poor electrical connection
When is the code detected?
- Engine Light ON (or Service Engine Soon Warning Light)
P0454 Chevrolet Description
The Evaporative Emission (EVAP) system is used to store fuel vapors in order to reduce the amount of fuel vapors into the atmosphere. The Fuel Tank Pressure (FTP) sensor is only used for EVAP system diagnostics. The FTP sensor is a transducer that varies resistance according to changes in the fuel tank pressure. The Engine Control Module (ECM) monitors the FTP sensor signal in order to detect vacuum decay and excess vacuum during the EVAP system diagnostic test. The ECM supplies a 5-volt reference and a low reference circuit to the FTP sensor.