Pelican Parts

Help Needed on OBD Codes Fix

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Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHHelp Needed on OBD Codes Fix

Reported or suspected cause

dme

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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 report identifying 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.

Reported cause
Porsche's diag worksheet says the only possible cause is a faulty DME and to replace it...
Original post Read captured discussion
Help Needed on OBD Codes Fix

Frequently discussed work

Replace all

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
Sensors replaced, plugs replaced - all running great - for 1 month.
Original post Read captured discussion
Help Needed on OBD Codes Fix

Read full discussion summary

Leading evidence: 'dme' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'dme' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace all' (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 · 2 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Replace all

Performed · outcome unconfirmed

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
Sensors replaced, plugs replaced - all running great - for 1 month.
Original post Read captured discussion
Help Needed on OBD Codes Fix

Replace plugs

Performed · outcome unconfirmed

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
Sensors replaced, plugs replaced - all running great - for 1 month.
Original post Read captured discussion
Help Needed on OBD Codes Fix

Replace same thing happens

Performed · outcome unconfirmed

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
Coils changed, same thing happens.
Original post Read captured discussion
Help Needed on OBD Codes Fix

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.

Replace all

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
Sensors replaced, plugs replaced - all running great - for 1 month.
Original post Read captured discussion
Help Needed on OBD Codes Fix

Replace plugs

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
Sensors replaced, plugs replaced - all running great - for 1 month.
Original post Read captured discussion
Help Needed on OBD Codes Fix

Replace same thing happens

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
Coils changed, same thing happens.
Original post Read captured discussion
Help Needed on OBD Codes Fix

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.

dme

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying 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.

Reported cause
Porsche's diag worksheet says the only possible cause is a faulty DME and to replace it...
Original post Read captured discussion
Help Needed on OBD Codes Fix

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.

2 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I would really appreciate your help. I have a 2003 C4S with 80,000 miles, and it is great. However one problem that has recently started involves getting past 4000 RPM in any gear. Once you hit this 4000 RPM, there was a judder, like a misfuel, and the revs became jumpy and indeed stopped accelerating. Coils changed, same thing happens. Fault codes said crankshaft sensor and cylinder 2 electrical short to ground and fuel pump shutdown. Sensors replaced, plugs replaced - all running great - for 1 month. Now starting to happen again; yesterday it "hesitated" at around 5000 RPM and 90 MPH; no reaction, then later on same again then CEL is illuminated and power is lost. Turn on / off and drives fine but with CEL still on. The stored error code is now P1266 which some say is a short to cylinder no 2, and some say is fuel pump shut off. Eitherway, it is causing me issues! The garage has spent time and cleaned and checked wiring/connections and in the garage all checks out - until you accelerate hard. Any suggestions gratefully received. Thank you in advance.

POST 2Original post

P1266 Fuel shutoff malfunction monitor Porsche's diag worksheet says the only possible cause is a faulty DME and to replace it... Before going that route, some more information on the fault codes will be needed. cylinder 2 electrical short to ground makes no sense to me, and there are numerous faults that could be related to the crank sensor. If you can, get the actual Pxxxx numbers. Is the garage a porsche specialist shop?

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