fullymatted.
Back to search
Rennlist

Disconnected Vacuum(?) Line Near Cabin Air Filter in the Frunk

Add to repair workspace
Open repair workspace
Original source
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHDisconnected Vacuum(?) Line Near Cabin Air Filter in the Frunk

Leading reported evidence

Disconnect hose (see photo)

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

However, upon inspection, I noted a disconnected hose (see photo) that looks like a vapor return line for the fuel tank filler.

Original post Read captured discussion
Disconnected Vacuum(?) Line Near Cabin Air Filter in the Frunk
Read full discussion summary

Leading evidence: 'Disconnect hose (see photo)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect hose (see photo)' (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.

Read captured replies

1 matching discussions · 5 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Disconnect hose originates

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Disconnected hose originates under the grey A/C line on left (clear plastic)...

Original post Read captured discussion
Disconnected Vacuum(?) Line Near Cabin Air Filter in the Frunk
Frequently discussed actions (2)

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

Disconnect hose (see photo)

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

However, upon inspection, I noted a disconnected hose (see photo) that looks like a vapor return line for the fuel tank filler.

Original post Read captured discussion
Disconnected Vacuum(?) Line Near Cabin Air Filter in the Frunk

Disconnect hose originates

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Disconnected hose originates under the grey A/C line on left (clear plastic)...

Original post Read captured discussion
Disconnected Vacuum(?) Line Near Cabin Air Filter in the Frunk
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.

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

  • Rennlist: 1 discussions

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

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

Generation: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a CEL with Fault Code P0446 ( DTC Description: Evaporative Emission (EVAP) System Vent Control Circuit) on my 1999 996-C4 Cabriolet . I understand that this is likely electrical. Especially given the current project where I am running GPS signal and speaker wire through the passenger side firewall grommet for the new head unit and amp, it could be a shorted or damaged wire that passes through that location. However, upon inspection, I noted a disconnected hose (see photo) that looks like a vapor return line for the fuel tank filler. I'm damned if I can find where it is supposed to be connected. Any ideas? The photo is taken from the front of the vehicle looking at the passenger side (US) firewall. Disconnected hose originates under the grey A/C line on left (clear plastic)... the open end is center of screen (black hose with right angle connection)

POST 3Original post

That is the old lead acid battery vent hose. Newer batteries, especially AGM battery's, don't require a vent hose.

POST 4 / ORIGINAL POSTEROriginal post

Thanks so much. That explains why it is floating around, homeless

POST 5 / ORIGINAL POSTEROriginal post

Thankyou. My hopes that re-connecting a line to resolve the CEL are dashed

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