Question

2005 Chevrolet Trailblazer P0496 Evaporative Emissions System High Purge Flow, what parts should check out or replace?

Answer 1

Hi there,

For this code you need to check the pressure sensor and the purge control solenoid. Basically if the solenoid is stuck open then you will have high purge from the charcoal canister. This code could also indicate there is an issue with the pressure sensor. It's this sensors job to tell the purge to happen, so if it's reading wrong it could or would indicate a pressure issue or to little pressure.