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Pelican Parts

200 C4 PSM warning

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

Discussion summary

YOUR RESEARCH200 C4 PSM warning

Leading reported evidence

Check rennslist

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

I'll check Rennslist.

200 C4 PSM warning
Read full discussion summary

Leading evidence: 'Check rennslist' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check rennslist' (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 · 0 partial discussions

Compare 2 other evidence results

Replace mass air flow sensor

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

As strange as it sounds, you might need to replace your MAF sensor.

200 C4 PSM warning

Replace tire sizes

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

Did you change tire sizes when you put the new ones on?

200 C4 PSM warning
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 rennslist

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

I'll check Rennslist.

200 C4 PSM warning

Replace 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 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

As strange as it sounds, you might need to replace your MAF sensor.

200 C4 PSM warning

Replace tire sizes

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

Did you change tire sizes when you put the new ones on?

200 C4 PSM warning
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.

  • Pelican Parts: 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: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Need advice. Was driving over the weekend, everything is going great. Suddenly the PSM failure light comes on as well as the ABS failure light. No appreciable difference in the car's handling. Since then, when I start the car, I simply turn off the PSM and everything is fine. I don't track the car and only drive it on sunny, dry days. Am I doing any long-term damage? I'd have it looked at sooner, but the IRS still owns me for the foreseeable future. Thanks in advance, Mark

POST 2Original post

As strange as it sounds, you might need to replace your MAF sensor. Do some searching on Rennlist forums, this comes up every now and then.

POST 3 / ORIGINAL POSTEROriginal post

Thanks for the advice. I'll check Rennslist.

POST 4Original post

Check to see if your brake lights are coming on when they should. These symptoms have been reported when the brake light switch fails or is maladjusted.

POST 5Original post

Both sound advice. Ill add that you could remove the MAF and start the car to see of psm/abs goes off. 2 little torx safety size 25 IIRC.

POST 6 / ORIGINAL POSTEROriginal post

Changed the MAF and the ABS and PSM failure warning lights went off. NOW, the check engine light came on. This is getting frustrating. I got 4 new tires about a 2 weeks before all of this started. Any connection b/w the tires and the warnings?

POST 7Original post

Did you change tire sizes when you put the new ones on?

POST 8 / ORIGINAL POSTEROriginal post

Same tire size, different make. Went with Hankooks instead of Michelins. There is a little bumpiness in the drive, but I know the rims are a little bent from the previous owner, and that existed with the old tires as well. I called my mechanic and he asked if the steering wheel was centered. I noticed that the steering wheel is off center about 20-30 degrees from center.

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