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That's a large leak in the evap system. There are several things that can cause that but I'd think a bad nearly 20-year-old hose or maybe bad purge valve would be the most likely culprits.
https://www.carparts.com/blog/p0455-code-evaporative-emission-system-large-leak-detected/
Posts in this Thread:
- P0455 code, Peter N, Tue, 5 Nov 2024 11:21:15
- Re: P0455 code, JerseySaab
, Tue, 5 Nov 2024 17:37:14 <-- Viewing This Message- Re: P0455 code, Peter N, Tue, 5 Nov 2024 19:11:51
- Re: P0455 code, Bernie
, Fri, 8 Nov 2024 15:02:09
1 - Re: P0455 code, JerseySaab
, Wed, 6 Nov 2024 17:51:39
1- Re: P0455 code, Mark, Fri, 20 Jun 2025 11:59:46
- Smoke test?, Paul from Palmyra, PA, Sat, 21 Jun 2025 02:54:25
- Smoke test?, Paul from Palmyra, PA, Fri, 20 Jun 2025 13:20:19
- Re: P0455 code, Snowmobile
, Wed, 6 Nov 2024 15:05:03
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