8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRed oil pressure light on. Plenty of Oil. Oil pressure fine
Leading reported evidence
Combined work: Install brand new genuine oil pressure sender + Install second, brand new genuine sender and it worked better
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
I installed a brand new genuine oil pressure sender that wouldn�t read above 4 bar of pressure. The next day I installed a second, brand new genuine sender and it worked better.
Red oil pressure light on. Plenty of Oil. Oil pressure fine
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Read full discussion summary
Leading evidence: 'Combined work: Install brand new genuine oil pressure sender + Install second, brand new genuine sender and it worked better' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'second sender may be slightly faulty' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Combined work: Install brand new genuine oil pressure sender + Install second, brand new genuine sender and it worked better' (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.
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.
Red oil pressure light on. Plenty of Oil. Oil pressure fine
Install brand new genuine oil pressure sender
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
I installed a brand new genuine oil pressure sender that wouldn�t read above 4 bar of pressure.
Red oil pressure light on. Plenty of Oil. Oil pressure fine
Install second, brand new genuine sender and it worked better
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
The next day I installed a second, brand new genuine sender and it worked better.
Red oil pressure light on. Plenty of Oil. Oil pressure fine
second sender may be slightly faulty
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
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 suspect a cause
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.
Suspected cause
I haven�t confirmed my oil pressure using a separate tool, but I suspect my second sender may be slightly faulty.
Red oil pressure light on. Plenty of Oil. Oil pressure fine
Frequently discussed actions (5)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Combined work: Install brand new genuine oil pressure sender + Install second, brand new genuine sender and it worked better
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
I installed a brand new genuine oil pressure sender that wouldn�t read above 4 bar of pressure. The next day I installed a second, brand new genuine sender and it worked better.
Red oil pressure light on. Plenty of Oil. Oil pressure fine
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.
8 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 · 1 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T064914Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi,
Started the car after it was sitting for 6 hours. Started fine. First thing I do is look at oil pressure. 5 bar. great. started to drive out onto the street to only then notice the red oil pressure light.
No funny engine sounds
Oil pressure 5 bar and then as it warmed up the pressure came down to were I expected
Oil pressure moving up and down with revs in a linear fashion.
No smoke
plenty of oil
Car has new oil pressure switch (3,000km ago) and new oil pressure relief valve and spring (997 version).
Connected PIWIS - no errors other than brake light switch (which I cannot seem to get rid of even after a new switch).
Thoughts?
EDIT: After letting it sit for 30 minutes I started the car and the oil light instantly went out.
No help here, sorry. I never thought about it having a dummy light for oil pressure, given we have the gauge. Can PIWIS read the oil pressure, or look at current dummy light status? How do the dummy light and pressure gauge connect to the sensor? It would seem the gauge is a more direct connection where the dummy light is probably triggered through the computer. The fact you have no codes is another clue. Just not sure what to do with it. Given the gauge is behaving normally, there seems no risk to the engine.
There are 2 connections on the sending unit that is mounted on top of the 4-6 bank/right side of engine. One wire is for pressure, the other for the light. 2 switches in one, sort of speak. Your sending unit is the problem. Very common issue. Needs to be replaced.
I installed a brand new genuine oil pressure sender that wouldn�t read above 4 bar of pressure.
The next day I installed a second, brand new genuine sender and it worked better. At cold-start idle, it�d read 4.5 bar, but would reach 5 if I opened the throttle.
I haven�t confirmed my oil pressure using a separate tool, but I suspect my second sender may be slightly faulty.
I wouldn�t be surprised if your new oil pressure sender is malfunctioning.
Yep, as Cape996 mentioned the oil pressure sender has two internal circuits....one for the warning light, and one for the pressure gauge..neither goes to the DME, both go to the instrument cluster ..
The warning light provides a ground to the cluster if under 8psi ..ungrounds if over 8psi
The pressure gauge provides a variable ground to the cluster from 0-to 180 ohms ...
The ground is provided by the engine block which is grounded by the ground cable to frame on the passenger side (USA)
If the warning light is ON yet the pressure is fine,, then either the sender is faulty or the wire from the cluster to sender is shorting to ground...
