P0446 GMC - 2005 Canyon

Question

I keep getting the P0446 code on my 2005 GMC Canyon. I have changed the fuel cap,the vent solenoid and the purge valve. Any other advice on how to correct this problem will be much appreciated. Thank You

Answer 1

P0446 Evaporative emission EVAP vent system performance

This code is more than likely cause by a faulty fuel tank pressure sensor, giving the wrong report it is on top of the fuel tank module , more than likely a replacement of this sensor resolves the issue of P0446.