DTC Code P0455

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

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Tiny
SQM
  • EXPERT
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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Wednesday, October 13th, 2021 AT 8:27 AM

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