Fixing Buick EVAP canister

April 1, 2024
A customer’s 2017-2018 Buick LaCrosse may have the SES light on.

A customer’s 2017-2018 Buick LaCrosse may have the SES light on.

DTC P0446 may be found stored. The code may have been set due to dust intrusion into the EVAP canister through the air inlet pipe. 

Clean filters in the air inlet to EVAP canister and replace the canister. The inlet pipe with filter housing is attached to the fuel inlet pipe with zip ties.

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