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Solved - Check Engine + ABS + PSM Errors Gone after MAF

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSolved - Check Engine + ABS + PSM Errors Gone after MAF

Leading reported evidence

Clean mass air flow sensor

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
Being the cheap SOB that I am, I cleaned the MAF sensor with this and all was good with the world and has remained so.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Frequently discussed work

Check engine ("cel") light also went

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
Shortly thereafter the Check Engine ("CEL") light also went on.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Read full discussion summary

Leading evidence: 'Clean mass air flow sensor' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'issue' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check engine ("cel") light also went' (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 3 other evidence results

issue

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

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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 · Original poster
I went with the cheap MAF just because I wasn't sure if it was the issue.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Check engine ("cel") light also went

Suggestion or failed attempt

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
Shortly thereafter the Check Engine ("CEL") light also went on.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Clean dashboard and i was able

Suggestion or failed attempt

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
So nice to have a clean dashboard and I was able to actually fix it myself!
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Frequently discussed actions (3)

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 ("cel") light also went

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
Shortly thereafter the Check Engine ("CEL") light also went on.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Clean dashboard and i was able

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
So nice to have a clean dashboard and I was able to actually fix it myself!
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Clean mass air flow sensor

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
Being the cheap SOB that I am, I cleaned the MAF sensor with this and all was good with the world and has remained so.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

issue

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

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 · Original poster
I went with the cheap MAF just because I wasn't sure if it was the issue.
Original post Read captured discussion
Solved - Check Engine + ABS + PSM Errors Gone after MAF

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.

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: 20261027T154520Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

2003 C4S. My ABS/PSM lights went on about a week before I put the car away for the winter. Shortly thereafter the Check Engine ("CEL") light also went on. OBD was telling me it was a MAF issue, but I didn't think this was related to the ABS/PSM. The shop down the road just had an OBD scanner and not anything Porsche specific. I bought a cheap MAF on eBay that came with the security torx. Install took me about 25 minutes. The ABS/PSM lights never came back on but the CEL remained. I drove it for about 10 minutes and the CEL finally went away. So nice to have a clean dashboard and I was able to actually fix it myself! Anyway, I'm just posting this because when I was searching the forum for answers, the ABS/PSM issue did not seem to go hand-in-hand with the MAF failure. I went with the cheap MAF just because I wasn't sure if it was the issue. For 50 bucks it was worth finding out. Should I upgrade to a Bosch or OEM MAF or just wait for this one to fail?

POST 2Original post

There are 2 MAF part numbers. New & old. To get the correct one, start with the Porsche part number for your year. Do not rely only on an Interchange part number.If it has the correct part number .it is O.K. A quick visual is the droopy 'nose' on the later MAF. You'll see the difference when you start lookingat the alternatives.

POST 3Original post

had the same thing 2 weeks ago when I took the 4.0 out of storage. CEL, PSM and ABS light came on. "great....NOW what?" plug in scanner.. code for MAF. light bulb goes off in my head as I was doing some work on it over the winter and I probably forgot to plug the MAF in. low and behold....open the trunk lid and sure enough I forgot to plug the MAF back in. plugged it back in...started the car...clear of any lights. sweet!

POST 4Original post

Glad that you got it cleared up. I experienced that about a year ago. Being the cheap SOB that I am, I cleaned the MAF sensor with this and all was good with the world and has remained so.

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