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911uk

Cold start Check engine light

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

Discussion summary

YOUR RESEARCHCold start Check engine light

Leading reported evidence

Clean anbd the fault switched off

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

It can be cleaned anbd the fault switched off.

Cold start Check engine light
Frequently discussed work

Check engine"

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

cold start "check engine"

Cold start Check engine light
Read full discussion summary

Leading evidence: 'Clean anbd the fault switched off' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check engine"' (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 · 4 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check engine"

Suggestion or failed attempt

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 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

cold start "check engine"

Cold start Check engine light

Check engine" yellow dash light and the message

Suggestion or failed attempt

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 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

when starting at roughtly -15 started rough, took a while to warm up and check oil level, but even after warmup, still shows the "check engine" yellow dash light and the message to take in for servicing.

Cold start Check engine light

Check oil level

Suggestion or failed attempt

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 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

when starting at roughtly -15 started rough, took a while to warm up and check oil level, but even after warmup, still shows the "check engine" yellow dash light and the message to take in for servicing.

Cold start Check engine light

Recommend bournemouth porsche

Suggestion or failed attempt

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 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

If you are near Bournemouth I can fully recommend Bournemouth Porsche.

Cold start Check engine light
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.

Check engine"

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

cold start "check engine"

Cold start Check engine light

Check engine" yellow dash light and the message

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

when starting at roughtly -15 started rough, took a while to warm up and check oil level, but even after warmup, still shows the "check engine" yellow dash light and the message to take in for servicing.

Cold start Check engine light

Check oil level

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

when starting at roughtly -15 started rough, took a while to warm up and check oil level, but even after warmup, still shows the "check engine" yellow dash light and the message to take in for servicing.

Cold start Check engine light

Clean anbd the fault switched off

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

It can be cleaned anbd the fault switched off.

Cold start Check engine light

Recommend bournemouth porsche

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

If you are near Bournemouth I can fully recommend Bournemouth Porsche.

Cold start Check engine light
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.

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

  • 911uk: 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: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

car has been sitting for a while over winter. had to move it to another garage. when starting at roughtly -15 started rough, took a while to warm up and check oil level, but even after warmup, still shows the "check engine" yellow dash light and the message to take in for servicing. car only had 17,000 miles. how will this error reset? or will i haveto take it in for someting. I figured it was just too cold at first... but msg won't go away. any idea. about clearing code, or what it might be?

POST 2Original post

Hi and welcome to 911uk. It could be any one of a number of things: a failed sensor is the most likely if the car has been sitting for a while, although it could also be the onset of something more serious (hopefully not!). You need to get the Porsche Hammer (diagnostics tool) to be plugged into your car to determine what the cause of the problem is. An independent is your best bet. Cheers -

POST 3Original post

Hi Adrien's diagnosis I think is spot on, it will most likely either be a signal from the Intake Air Mass Flow Sensor, or one of the Oxygen Sensors in one or both of the the 2 Catalysers. I suspect that the fine wires in the Air Mass Flow Sensor have got a bit of contamination on them from the car standing etc. It can be cleaned anbd the fault switched off. My experience with OPCs is positive so depending where you nearest one is relative to a good independent take your choice. If you are near Bournemouth I can fully recommend Bournemouth Porsche. Regards Big Bob

POST 4 / ORIGINAL POSTEROriginal post

cold start "check engine" Thanks everyone for your comments. This spring I will get the diagnostic checked out at the dealer. Since these sorts of errors may occur sometimes. Would it be advantageous to buy an OBDII reader, simpy to help me cancel the codes myself when necessary? someone mentioned the Porsche Hammer Diag. But how about a cheaper OBDII reader from ebay? worth it or not? Thanks AJ

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