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Mysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

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YOUR RESEARCHMysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Test harness

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
Didn't know that there is an additional port for an oxygen sensor test harness.
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Mysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Suggestion
In my Bentley manual, on page 97-12, it's listed as Oxygen Sensor Test Harness.
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Mysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

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1 matching discussions · 6 captured posts examined · 0 partial discussions

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Use port

Suggestion or failed attempt

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
I did a little internet searching but couldn't find any information on how to use the port.
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Mysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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.

Test harness

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
Didn't know that there is an additional port for an oxygen sensor test harness.
Original post Read captured discussion
Mysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Suggestion
In my Bentley manual, on page 97-12, it's listed as Oxygen Sensor Test Harness.
Original post Read captured discussion
Mysterious connector - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use port

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
I did a little internet searching but couldn't find any information on how to use the port.
Original post Read captured discussion
Mysterious connector - 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.

6 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.

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

Generation: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Car is a 2003 ROW 986. On the left side of the trunk is a fuse box (fuse box 2). In my car this connector has 2 cables. Made a foto but found a better one on the web. Does anybody know what that connector is for? Thanks

POST 2Original post

Power for Bose sub? Rear parking sensors?

POST 3Original post

Hi! In my Bentley manual, on page 97-12, it's listed as Oxygen Sensor Test Harness. Attaching pic below: Hope that helps!

POST 4 / ORIGINAL POSTEROriginal post

Thanks a lot porschefan76! Didn't know that there is an additional port for an oxygen sensor test harness.

POST 5Original post

Quotes source post: 636975

No problem at all! I didn't know it existed either until you asked the question. I did a little internet searching but couldn't find any information on how to use the port.

POST 6Original post

When the port is connected to the Porsche diagnostic tool, you can graphically see the voltage curves and response for all of the O2 sensors in real time

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