10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCheck Engine Light Wont Go Off
Leading reported evidence
Check faults &
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
buy an OBDII scanner for checking the faults & resetting codes, < $100 now
Leading evidence: 'Check faults &' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check faults &' (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 contain suggestions
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Suggestion
You can't reset OBDII fault codes by disconnecting the battery.
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.
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Suggestion
As I said; "You can't reset OBDII fault codes by disconnecting the battery."
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
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Suggestion
If you want it off immediately, disconnect the negative cable on the battery for a few minutes and then reconnect.
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.
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Suggestion
If you replaced the cap with the correct cap, the light should go off in several drive cycles.
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.
10 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: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Last week my engine light went on and I realized that I left my gas cap at the gas station. No luck in finding it so I bought a new cap at a local parts store ( Not Porsche). I have driven the car for 5 days now but the light stays on. What sensor is telling the computer that the cap was off ? Do I need a new Porsche gas cap? Do I need to wait longer?
I think you have to go to the dealer and they have to reset something.
I had to do that when mine was not closed all the way when my wife drove the car last...
If you replaced the cap with the correct cap, the light should go off in several drive cycles. If you want it off immediately, disconnect the negative cable on the battery for a few minutes and then reconnect. Depending on the year of your car, you may have to reenter the 4 digit radio code. Your car will run a little rough for a while until the computer relearns the proper settings.
You can't reset OBDII fault codes by disconnecting the battery. Although, the
tank venting & leaking are part of the OBDII diagnostics, I wouldn't assume that's
the source of your problem, although the correlation is logical. I would:
1. buy an OBDII scanner for checking the faults & resetting codes, < $100 now
2. find an independent Porsche with the PST2 tester
3. go to a "big box" auto supplier & have them read the code
4. go to the dealer
Bottomline: Don't drive with the fault code present too long as you might have
a costly repair to deal with in the future.
Sorry, but that is not true. If you disconnect the battery (for at least 2 minutes) it will clear the light. The fault memory in the DME will be cleared only if the fault does not occur again within a specific number of engine cycles. If the fault does occur again then the light will come back on.
Took the car to autozone, they scanned the computer, found out that it was in fact evaporation from the gas cap being off and reset the CEL. Took about 4 minutes and they didnt charge me a cent.
"If you disconnect the battery (for at least 2 minutes) it will clear the light."
As I said; "You can't reset OBDII fault codes by disconnecting the battery."
The fault memory uses flash memory technology which is non-volatile to Vcc (battery voltage).
"Took the car to autozone, they scanned the computer, found out that it was in fact evaporation from the gas cap being off and reset the CEL. Took about 4 minutes and they didnt charge me a cent."
Great, that's the way to solve the problem, the right way.
Please reread my post - I am not trying to start an argument here. There is not a "right way" either method will work. My point is that if the
cause
is not corrected then resetting the light will do no good as it will just come on again.
This is a source reference. Confirm exact model applicability in the original material.
