Possible causes
– Faulty Fuel Tank Pressure Sensor
– Fuel Tank Pressure Sensor harness is open or shorted
– Fuel Tank Pressure Sensor circuit poor electrical connection
– Fuel Tank Pressure Sensor harness is open or shorted
– Fuel Tank Pressure Sensor circuit poor electrical connection
Tech description
On most GMC vehicles the sensor is on top of the fuel tank.
When is the obd code mean?
An excessively low voltage from the sensor is sent to Engine Control Module (ECM).
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0452 GMC OBD Code Description