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Failure light twice - 996 C4S 2003 - 28,000 miles

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12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHFailure light twice - 996 C4S 2003 - 28,000 miles

Leading reported evidence

Replace under cpo in dec

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
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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
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

Its your Oil Pressure Sending Unit, i just had mine Replaced Under CPO in Dec..

Failure light twice - 996 C4S 2003 - 28,000 miles
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Leading evidence: 'Replace under cpo in dec' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace under cpo in dec' (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 · 12 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 under cpo in dec

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

Its your Oil Pressure Sending Unit, i just had mine Replaced Under CPO in Dec..

Failure light twice - 996 C4S 2003 - 28,000 miles
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.

12 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: 20261026T124918Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Has anyone had the failure light with oil can symbol come on, go out, disappear for days then come on again ? Both times briefly from a few weeks ago... Oil pressure is good, level is good, engine temp normal 180, no oil leaks.......will have it checked out at dealer very soon, but thought someone may have experience with this...thanks for any thoughts...

POST 2Original post

I have had the same problem twice recently on my 02 996 cab with 35k miles. Oil level OK, temp OK. Interested in other's experience with same warning.

POST 3Original post

I had this yesterday but it was accompanied with a drop to zero in oil pressure and then an instant recovery after about a second. This happened twice in about 30 seconds and then not again. I am thinking electrical fault maybe with supply to pump but only a guess. Has anyone had this looked into further??

POST 4Original post

Search "oil sending unit". That could be a possibility.

POST 5Original post

Get a code reader like Durametric and it shouldn't be too hard to figure out.

POST 8Original post

Hey everyone. I had the exact same issue. My oil pressure gauge would drop to zero, oil light comes out then went out. I had a bad pressure sending unit. Hope this helps.

POST 9Original post

Its your Oil Pressure Sending Unit, i just had mine Replaced Under CPO in Dec.. Quick Fix. I notified the dealer about it after i had "that" light come on Randomly last Summer Twice... They said its Common... P/N 996-606-203-02 $64.63 USD

POST 11Original post

Check out this post https://rennlist.com/forums/996-foru...ght=oil+sensor I've had mine changed in 2003. The fact that they didn't design the connector to be weather proof, I would imagine it will need to be replaced in the future. I've had 3-4 times in the pass 2 years where the indicator has went to 0. I think 2 times it was while going through the car wash and the other times happened after going through fog.

POST 12Original post

Try this experiment -- key on engine off -- what does the oil pressure gauge read? BTW - I have the same problem w/ mine.

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