Po455
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Junior Member
Joined: Jan 2023
Posts: 1
Po455
2006 H2 SUT Mileage: 134653
- Assistance please diagnosing the PO455 Code.
When I start the engine a bell tolls and the read out on the dash says ~Tighten Gas Cap. Engine light is on.
1. Tightened cap, no good. New cap - weeks pass, result: same message and check engine light still on.
2. Changed the Canister vent Solenoid. Same message and check engine light still on.
What's the next step recommended please?
- Assistance please diagnosing the PO455 Code.
When I start the engine a bell tolls and the read out on the dash says ~Tighten Gas Cap. Engine light is on.
1. Tightened cap, no good. New cap - weeks pass, result: same message and check engine light still on.
2. Changed the Canister vent Solenoid. Same message and check engine light still on.
What's the next step recommended please?
Senior Member
Joined: Jul 2012
Posts: 8,999
From: C-Town
Does your nose work? Sniff away for fuel odor underneath+look for wet areas around the fuel tank>>>FPM Rusted/Rotted/Leaking.
P0455
Evaporative Emission (EVAP) System Large Leak Detected!
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