DTC Code P0455

MARK CAVINEE

MEMBER
2007 BUICK RENDEZVOUS
3.6L
V6
2WD
AUTOMATIC
100,000 MILES

My son has the vehicle listed above he is trying to get checked and third code comes up. Do you have any diagrams on the locations of the emissions parts such as the canister purge valve etc? Thank you

Wednesday, October 13th, 2021 AT 8:03 AM

1 Reply

SQM

MECHANIC
6,383 POSTS

Hello,

The code: P0455- Evaporative Emission (EVAP) System Large Leak Diagnostic

This gets triggered when there is a larger leak detected in the EVAP system. It could be a stuck open valve it can also be a cracked hose.

https://www.2carpros.com/articles/evap-system-code-repair

I have attached the trouble shooting steps for the P0455 (see below).
Also attached all the component diagrams and testing procedure for different type of issues.

Please let me know of any questions.
Thank you.

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