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Check engine light - no codes

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

Discussion summary

YOUR RESEARCHCheck engine light - no codes

Leading reported evidence

Check with 2 different scanners

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 · Original poster

checked with 2 different scanners, with the same result - no codes!

Check engine light - no codes
Frequently discussed work

Check station-detector option

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

Mine has a smog-check-station-detector option..

Check engine light - no codes
Read full discussion summary

Leading evidence: 'Check with 2 different scanners' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check station-detector option' (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 · 9 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use foxwell 530

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

I use Foxwell 530.

Check engine light - no codes

Check station-detector option

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

Mine has a smog-check-station-detector option..

Check engine light - no codes

Disconnect battery

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

Disconnect the battery for thirty minutes to clear the ECU.

Check engine light - no codes

Reconnect battery and do an e-gas calibration cycle

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

Then reconnect the battery and do an e-gas calibration cycle.

Check engine light - no codes
Frequently discussed actions (7)

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

Check station-detector option

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

Mine has a smog-check-station-detector option..

Check engine light - no codes

Check with 2 different scanners

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 · Original poster

checked with 2 different scanners, with the same result - no codes!

Check engine light - no codes

Disconnect battery

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

Disconnect the battery for thirty minutes to clear the ECU.

Check engine light - no codes

Reconnect battery and do an e-gas calibration cycle

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

Then reconnect the battery and do an e-gas calibration cycle.

Check engine light - no codes

Replace convertible top actuators

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

It was interesting that someone mentioned "soft top fail codes" as I did just replace the convertible top actuators!!

Check engine light - no codes

Use foxwell 530

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

I use Foxwell 530.

Check engine light - no codes

Use third scanner, preferably a high quality one

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

I would use a third scanner, preferably a high quality one...

Check engine light - no 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.

9 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: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello all, have a check engine light on in my 2002 C4. Car seems to be running fine. checked with 2 different scanners, with the same result - no codes! Any thoughts are appreciated and thanks.

POST 2Original post

Disconnect the battery for thirty minutes to clear the ECU. Then reconnect the battery and do an e-gas calibration cycle. Then drive and see what shows up. Do you know anyone with Durametric?

POST 3Original post

I would use a third scanner, preferably a high quality one... I have been working in Dealerships since 1974 and have Specialized in Drivability/Computer Engine Management since it was released in the early 80's....I have NEVER seen a CEL that didn't have an associated Code stored....( because that's why they illuminate ) Caveat ::..I suppose it is possible to have a crossed wiring that would illuminate the little light that was totally separated from the Engine Management Computer..but I have never seen such a thing..

POST 4Original post

+1 most generic code scanners only read the Federally mandated OBDII codes, they seldom display the Manufacturer specific ones without special coding. (For example the Soft top fail codes... )

POST 5 / ORIGINAL POSTEROriginal post

Thanks I will give that a try. I will also get it scanned at my local independent

POST 6Original post

If your living with a 996, the Durametric or similar (having a senior moment on the other brand folks like) is kind of a must have. These throw codes at the darnedest things often simple.. Especially when your trying to get through smog.. Mine has a smog-check-station-detector option.. If I drive towards the station all the check engine lights come on when I drive away they go out.. <lol lol>

POST 7Original post

I use Foxwell 530. Is easy to use and has a lot of functionality. Reads all codes annd parameters except cam deviations on 2002 models.

POST 8 / ORIGINAL POSTEROriginal post

Awesome ! Thanks everyone. I will look into the Durametric and Foxwell. It was interesting that someone mentioned "soft top fail codes" as I did just replace the convertible top actuators!! Everything seems to be working fine with the top but that may be the culprit. Thanks again

POST 9Original post

Quotes source post: 18710894

FYI, I bought a Foxwell 530 and discovered it couldn't read cam deviations, so I sent it back, then reached out to Foxwell to see which our their units would. Upon their recommendation, I bought a 710. Works like a charm!

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