P0446 Code Unlocking the Secrets of Engine Performance

When P0446 is triggered, the ECM has detected a short in the circuitry to activate the vent control valve, or the EVAP system failed to maintain the vacuum. P0446 is set when there is an evaporative emissions leak from the components or when there is a malfunction in either the VSV for EVAP, the VSV ... A P0446 code is generic for an evaporative emission system vent control circuit. DTC P0446 Evaporative Emission Vent System Performance How to fix P0446 EVAP Vent system performance code on a GM or Chevy truck. this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement ... front fender or behind rear wheel.. code is for canister vent solenoid circuit.. 2 wires..rd/ye 12 volts...gy/ye pcm ... The symptom from my understanding was some fuel leakage on the floor when filling up and/or the inability to put gas in the truck without the pump shutting off ... P0446 means the vent valve in the EVAP system is malfunctioning. Our expert mobile mechanics can diagnose and fix your P0446 trouble code wherever you are. 26 - GM P0446 Vent System Performance-Diagnose & Fix it Right the First Time! ... The Common GM EVAP Code How to Diagnose and Repair. The manual says it's "vent system performance" and that the system will throw a code if a leak is detected. Then later it says the canister or hoses are the ...