P0454 Saturn Vue 2008-

Question

Check engine light on, coded po454x3, What does that mean?

Answer 1

The code is for the fuel tank pressure sensor. This sensor tells the computer how much pressure is in the tank. This will then trigger the purge solenoid to open and pull the fuel vapor from the charcoal canister and the gas tank. The code is specifically saying there is an interminent reading. This could be a bad sensor or a problem with the wiring to the computer.