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P0455 cel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHP0455 cel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace gas cap about 3 months ago

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
I changed the gas cap about 3 months ago with a new OEM one so I doubt that is the issue, any ideas on where to start?
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P0455 cel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Replace gas cap about 3 months ago' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace gas cap about 3 months ago' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 2 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace gas cap about 3 months ago

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
I changed the gas cap about 3 months ago with a new OEM one so I doubt that is the issue, any ideas on where to start?
Original post Read captured discussion
P0455 cel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

2 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

986Forum: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link
Our dealer toos a compressed ait hose and blew it out and pftttt no more code.
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So yesterday went out and started my 2001 and immediately got a CEL, pulled out my little Autel and had a hard P0455 error, Evaporative Emission System Leak (Large Leak). I changed the gas cap about 3 months ago with a new OEM one so I doubt that is the issue, any ideas on where to start? I really don't want to just start throwing parts at it.

POST 2Original post

Ive had the same issue at times.... take the cap off re seat it... clear the code and drive it again and see if it returns. It could just be dirt in the return line to the engine. Our dealer toos a compressed ait hose and blew it out and pftttt no more code.

This is a source reference. Confirm exact model applicability in the original material.