What causes the p0446 code on a Chevy Impala?

There are many things that can cause the P0446 trouble code to trigger in your Chevy Impala. Here are the most common problems that will throw the code: Vapor Canister Purge Valve – One of the most common causes of the P0446 code is the vapor canister purge valve. It’s really easy to replace. There are a few clips that you need to find and remove.

What does the code p0446 mean on a vent valve?

Code P0446 sometimes indicates that an electrical failure has been detected in either the vent valve itself or its control circuit.

Why does my Chevy Impala have a trouble code?

When the EVAP control system vent control circuit no longer responds to the ECU, it will throw the P0446 OBDII Code, and the service engine soon light will illuminate. There are many things that can cause the P0446 trouble code to trigger in your Chevy Impala.

What happens when the ECM detects code p0446?

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 proper pressure during the active EVAP leak test. What Are The Symptoms Of P0446? What Is The Cause Of P0446? How Serious is Code P0446? – Low

What causes an EVAP system code p0446?

Here are the most common causes of an EVAP System Malfunction or code P0446: 1 Malfunctioning vent control valve 2 Clogged vent valve 3 Control circuit issues (e.g., loose or damaged wiring) 4 Powertrain control module hardware or software issues (rather uncommon)

What does p0446 mean on a fuel pump?

Scan your vehicle to verify P0446 is the only code present. If other codes are present regarding fuel pressure or the fuel system, repair and diagnose those first. If it is paired with P0441, P0440, and/or P0446 there is most likely a solenoid failure, leaking charcoal canister, or a more complex EVAP leak.

What does EVAP stand for in Chevy Impala?

The code technically stands for: The EVAP system captures all fuel vapor from the fuel tank and sends them to the engines intake in order to be ignited in the normal combustion process.

Code P0446 sometimes indicates that an electrical failure has been detected in either the vent valve itself or its control circuit.

Why does my Impala have a gas smell?

P0446 may also cause a slight gas smell. This is due to it being related to the system that deals with fuel vapors. P0446 is a universal OBDII trouble code. This means that regardless of which make or model of vehicle, the code will mean the same thing (Impala or not). The code technically stands for:

What should I do about my Buick LeSabre p0446?

After ascertaining what trouble codes appear with the P0446, the mechanic will typically inspect the EVAP system. This includes the purge valve, line, and canister. The mechanic will inspect the gas cap to make sure that it can handle pressure.