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Porsche Club GB

P0740

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

Discussion summary

YOUR RESEARCHP0740

Leading reported evidence

Check on my 99 (t) tiptronic cabriolet

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 recently conducted an OBD check on my 99 (T) Tiptronic Cabriolet.

Original post Read captured discussion
P0740
Read full discussion summary

Leading evidence: 'Check on my 99 (t) tiptronic cabriolet' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check on my 99 (t) tiptronic cabriolet' (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 1 other evidence results

Check on the diagnostic sheet

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

That is the first thing to check on the diagnostic sheet:

Original post Read captured discussion
P0740
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.

Check on my 99 (t) tiptronic cabriolet

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 recently conducted an OBD check on my 99 (T) Tiptronic Cabriolet.

Original post Read captured discussion
P0740

Check on the diagnostic sheet

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

That is the first thing to check on the diagnostic sheet:

Original post Read captured discussion
P0740
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.

  • Porsche Club GB: 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: 20261026T150451Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Good morning all, I recently conducted an OBD check on my 99 (T) Tiptronic Cabriolet. The error code P0740 was listed. Having done some looking around on the internet the code is something to do with Tiptronic Torque Converter. Has anyone else experienced this error code? If so what were the symptoms? and how was the issue rectified? The car has been fine to drive, no safe mode on the tiptronic etc... having said that it does sometimes feel a bit harsh changing down from 3 to 2, is this a symptom?

POST 2Original post

I've had a similar problem, and a tip service (transmission fluid and filter) may sort you out; the recommended change is 96000, but if the car is below this and has never had it done, or not had it done say for over 3 years, it'd probably be a good idea anyway. Other problems can be related tot he MAF, and the way the engine ECU and the gearbox electronics talk to each other. I've found Kev Waterhouse at DW Performance in Wellingborough is very good for a chat on this sort of stuff or popo in if you can get to him https://www.dwperformance.co.uk/.

POST 3 / ORIGINAL POSTEROriginal post

She had an ATF and Filter change in May 11 and has done about 28000 since.

POST 4Original post

2011 was 6 years ago, so I would get the fluid level checked. That is the first thing to check on the diagnostic sheet:

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