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Planet-9

CEL random misfire codes

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Original source
8 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCEL random misfire codes

Leading reported evidence

Replace flywheel and it seems

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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

The local dealer replaced the flywheel and it seems to have done the trick.

CEL random misfire codes
Read full discussion summary

Leading evidence: 'Replace flywheel and it seems' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace flywheel and it seems' (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.

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1 matching discussions · 8 captured posts examined · 1 partial discussions

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Use w/o cpo i would contact pcna directly

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 bought used w/o CPO I would contact PCNA directly.

CEL random misfire codes
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.

Replace flywheel and it seems

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

The local dealer replaced the flywheel and it seems to have done the trick.

CEL random misfire codes

Use w/o cpo i would contact pcna directly

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 bought used w/o CPO I would contact PCNA directly.

CEL random misfire codes
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.

  • Planet-9: 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: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I have a 2005 997 cab. The check engine light is continually coming on and 2 dealers have read codes of random misfires at idle. They have both replaced spark plugs and coils. After 5 months, 5 dealer visits and 5,000 miles, light is still on. I've been told to use fuel injector cleaner different brands of gas and none of it helps. Any advice?...thanks

POST 2Original post

This problem has been reported (there are a variety of CEL issues), but it should be fixable. Maybe a software problem rather than hardware problem is at fault. Some dealers just are not competent and some are just not interested. After two dealer misfires I would suggest kicking this up to PCNA customer service. Did you buy the car new/CPO and is the car still under warranty? This will have some bearing on how best to approach the problem. If you bought new/CPO I would return to the selling dealer and firmly but politely state that the problem isn't fixed and that you are going to contact PCNA and go forward in conjunction w/ the dealer. If you bought used w/o CPO I would contact PCNA directly. If there is any remaining warranty or if the problem began while under warranty you will be standing on a lot firmer ground. You should not have to live w/ this problem.

POST 4Original post

Thanks for the suggestions. It is a CPO car I bought from a dealer in PA. I live in NH. I have called Porsche N.A. and opened a case. We'll see where it goes. I've experienced many other problems. This car has been in the shop over 20 days so far. CEL means I can't sell the car or even get a state inspection. How many opportunities do I give them to fix it before I call a lawyer?(as a last resort).

POST 5Original post

Buy the Durametrics cable and read out the error code for yourself, then you might want to post this fault code at Renntech as well as that is one of the most technical Porsche forums around.... no affiliation, just the fact that the moderator knows a heck of alot... but you need the code to get any visibility as to the problem...

POST 6Original post

Each state has it's own lemon law requirements/criteria. I'm not sure if the applicable laws are those where you reside (NH) or where you purchased the car (PA). Typically you are obligated to allow the selling dealer and/or manufacturer to make the car right within a specified amount of time and with a specified number of attempts before the car can be declared a lemon. I would suggest that you pursue the PCNA avenue while researching your applicable local lemon statutes. As a CPO car Porsche has an obligation to make the car right. That's a big plus on your side, regardless of the dealer. Try not to work yourself into the mind set that the car is a POS and not worth the money you paid because if you do even if they make the car right you won't be happy. Good luck, keep us posted about the outcome.

POST 7Original post

An update: After a few more visits to dealer and calls to PorscheNA (they were no help at all). The local dealer replaced the flywheel and it seems to have done the trick. No codes for one week now! I'll keep you all updated if that changes.

POST 8Original post

amazing, I figured the fuel injector cleaner was obviously not going to fix anything but flywheel would have not been one of my guesses. Glad its working out for you.

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