15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHSpeedo & Odometer Not Working - ABS Light On 1999 911
Reported or suspected cause
electronic control module
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
I had exactly the same problem last year, same symptoms and no contact between ABS and Durametric, it turned out to be the electronic control module for the ABS system which is bolted on top of the hydraulic unit.
Speedo & Odometer Not Working - ABS Light On 1999 911
Read full discussion summary
Leading evidence: 'electronic control module' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'electronic control module' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check abs pump, and the wiring harness was barely attached' (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.
Check abs pump, and the wiring harness was barely attached
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 the ABS pump, and the wiring harness was barely attached.
Speedo & Odometer Not Working - ABS Light On 1999 911
abs module (which is sitting
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
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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 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
It is likely the ABS module (which is sitting on top of the pump).
Speedo & Odometer Not Working - ABS Light On 1999 911
Check connection at the pump
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
Will check all the wiring, will also check the connection at the pump.
Speedo & Odometer Not Working - ABS Light On 1999 911
Check hours logged by the dme
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
I'm guessing that milage of any Porsche would.be traceable via the Durametric tool and checking the hours logged by the DME.
Speedo & Odometer Not Working - ABS Light On 1999 911
Reported and suspected causes (2)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
electronic control module
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
I had exactly the same problem last year, same symptoms and no contact between ABS and Durametric, it turned out to be the electronic control module for the ABS system which is bolted on top of the hydraulic unit.
Speedo & Odometer Not Working - ABS Light On 1999 911
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.
15 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
I ended up getting a second hand part which fixed it instantly.
Hi All,
Pulled the car out of hibernation today, and have a couple issues. The first is the ABS light came on. The last time I drove the car, it flickered a bit when I would hit a bump, but it was not staying on. It is now on solidly.
The second thing that occurred is the Speedo and the Odometer stopped working. It was also just over bumps at first, but now both are not working at all (analog and digital). Everything else is working on the cluster. The analog speedo also works because I was able to trigger it with my Durametric.
My durametric was not able to connect to the ABS module, so I was not able to pull codes. I think I was able to connect to it before.
In some searching, it looks like the two may be related, since the ABS signal communicates with the cluster. Any clue where to look?
Also, if the ABS controls the odometer, what prevents someone from disconnecting the connector and not recording mileage? My car has 121K miles, so I am not really worried about keeping the miles down, but it seems like a fairly easy thing for someone to do if they were trying to be dishonest.
This might be an exercise in futility, but I think both those electrical consumers use the same ground point.
location G3. Which is drivers side, trunk.
Might be worth a look.
I'm guessing that milage of any Porsche would.be traceable via the Durametric tool and checking the hours logged by the DME.
Sounds like a loose connection or wiring issue. You may want to check if the abs connector is tight.
If memory serves, the wheel speed sensors feed the abs unit, which in turn feeds the cluster and DME.
I think even if all the wheel speed sensors have gone offline, Durametric should still be able to communicate with the abs unit. The fact that you can't communicate with the abs unit seems to point to the abs connector.
I had exactly the same problem last year, same symptoms and no contact between ABS and Durametric, it turned out to be the electronic control module for the ABS system which is bolted on top of the hydraulic unit. I ended up getting a second hand part which fixed it instantly.
There are different variations so make sure you get one that has the same Bosch part nr. Hope this helps.
Thanks all for the help. Will check all the wiring, will also check the connection at the pump. I actually already have a spare so that is good. When you swapped your out, did you need to change the entire pump/module, or could you just change the module?
I wouldn't assume it is the harness (unless the car had been damaged in some way. It is likely the ABS module (which is sitting on top of the pump). Do you have a durametric or other scan tool that can connect to the individual modules? That would help rule it out. I actually have a spare ABS pump/module if you wanted to test with it.
