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Pelican Parts

Porsche 996.1 O2 Sensors

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHPorsche 996.1 O2 Sensors

Leading reported evidence

Check just

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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 performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster

When I went under the car and checked just to confirm, I can see only 2 O2 sensors pre cats, with no bungs post/on cats.

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Porsche 996.1 O2 Sensors
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Leading evidence: 'Check just' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check just' (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 · 4 captured posts examined · 0 partial discussions

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Check online and found out

Suggestion or failed attempt

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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

Went back to check online and found out that there has been a setup from factory with 2 O2 sensors, with old DME that reads only 2 pre cats O2 sensors.

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Porsche 996.1 O2 Sensors
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.

Check just

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

When I went under the car and checked just to confirm, I can see only 2 O2 sensors pre cats, with no bungs post/on cats.

Original post Read captured discussion
Porsche 996.1 O2 Sensors

Check online and found out

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

Went back to check online and found out that there has been a setup from factory with 2 O2 sensors, with old DME that reads only 2 pre cats O2 sensors.

Original post Read captured discussion
Porsche 996.1 O2 Sensors
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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.

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

  • Pelican Parts: 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: 20261026T074343Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello All Working on restoring my 2000 996 cab tip to the best shape. While working on the exhausts O2 sensors, and after numerous researches I was convinced that all 996s have 4 O2 sensors in total, 2 pre cats and 2 post/on cats. When I went under the car and checked just to confirm, I can see only 2 O2 sensors pre cats, with no bungs post/on cats. Even when checking on the engine shelf i can see only 1 O2 red/black connector plug each side, no extra wiring hanging there. Went back to check online and found out that there has been a setup from factory with 2 O2 sensors, with old DME that reads only 2 pre cats O2 sensors. Anyone have ever seen this before? Any idea if this is really the case? or Should i assume the old owner has cancelled them, and worked around it to cancel the cel light?

POST 3Original post

I believe that there is a difference on these O2's with early cars to RoW and US cars - latter most likely due to California emissions.

POST 4 / ORIGINAL POSTEROriginal post

Thank! Looks like it - My 996 is RoW. I just want to make sure the post cats sensors were not cancelled by the previous owner.

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