How do you check a fuel tank pressure sensor on a GM?

Testing the Gas Tank Pressure Sensor If you have an automotive scanner, you can pull up the pressure voltage on the scan tools data stream. The voltage should never read zero or 5 V. Instead the reading should be somewhere in between those high and low points.

What is a good fuel tank pressure?

Generally it’s a small amount of pressure that is applied (. 25 psi or more) but it’s enough to run the EVAP monitor. The PCM has a preset calculation for the amount of bleed down time it will look for to determine the actual fuel tank pressure.

What does the fuel tank pressure sensor p0452 do?

P0452 GMC Meaning The fuel tank pressure sensor responds to changes in fuel tank pressure. Vacuum is consider negative pressure. The information supplied by the fuel tank pressure sensor to the Engine Control Module is used in order to detect vacuum decay or an excessive vacuum during the EVAP diagnostic routine.

What are the possible causes of p0452 GMC?

P0452 GMC Possible Causes 1 Faulty Fuel Tank Pressure Sensor 2 Fuel Tank Pressure Sensor harness is open or shorted 3 Fuel Tank Pressure Sensor circuit poor electrical connection 4 Fuel Tank Filler Tube More …

What does DTC code p0452 stand for?

Related evaporative emission trouble codes include P0450, P0451, P0453, P0454, P0455, P0456, P0457, P0458, and P0459. The only symptom you will notice with a P0452 code is the service engine soon or check engine light will illuminate. In rare cases you may smell a noticeable fuel vapor. Potential causes for this DTC include:

What causes DTC on fuel tank pressure sensor?

Potential causes for this DTC include: 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.