6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCam sensor fault code p0343
Leading reported evidence
Check from this pin
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
I have continuity checked from this pin to cms pin 2 and it checks out.
Leading evidence: 'Check from this pin' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check from this pin' (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.
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
On my diagnostic sheet there is only one test for P0343 Above limit, which says: "Check signal wire from DME control module, pin III/20, to CMP sensor for short circuit to B+."
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 have disconnected just the pin 2 wire from the dme (just this wire all connectors plugged in ) and then I can still read 12v FROM the dme which means the voltage is coming out from the dme???
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
If I am reading the diagnostic sheet correctly, and you are getting 12v+ to pin 2 on the CMP plug when the plug on the DME is disconnected, they you have a wiring fault.
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
The troubleshooting says short on the wire and points to wire damage but even disconnecting the wire from the dme and the dme pin reads battery voltage all the time.
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
On my diagnostic sheet there is only one test for P0343 Above limit, which says: "Check signal wire from DME control module, pin III/20, to CMP sensor for short circuit to B+."
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 have disconnected just the pin 2 wire from the dme (just this wire all connectors plugged in ) and then I can still read 12v FROM the dme which means the voltage is coming out from the dme???
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
If I am reading the diagnostic sheet correctly, and you are getting 12v+ to pin 2 on the CMP plug when the plug on the DME is disconnected, they you have a wiring fault.
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
The troubleshooting says short on the wire and points to wire damage but even disconnecting the wire from the dme and the dme pin reads battery voltage all the time.
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
On my diagnostic sheet there is only one test for P0343 Above limit, which says: "Check signal wire from DME control module, pin III/20, to CMP sensor for short circuit to B+."
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.
6 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: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi,
I have the following fault code on my 996 c4 my2000
P0343
112 Camshaft Position Sensor 1 "" Above Limit
I removed the sensor and checked out using the diagnostic info and found that I read battery voltage on pin III/20 (pin 2 on sensor plug). The troubleshooting says short on the wire and points to wire damage but even disconnecting the wire from the dme and the dme pin reads battery voltage all the time.
Now I am stuck, looks like a DME internal fault or could other wiring external to the dme cause this reading?
Any help appreciated
Could the troubleshooting procedure be wrong as i thought dme's were very very reliable??
The car symptoms are, starts and drives ok but slow to rev over 3k ish. no CEL
On my diagnostic sheet there is only one test for P0343 Above limit, which says: "Check signal wire from DME control module, pin III/20, to CMP sensor for short circuit to B+."
If I am reading the diagnostic sheet correctly, and you are getting 12v+ to pin 2 on the CMP plug when the plug on the DME is disconnected, they you have a wiring fault. A short to B+ (ie 12v+).
Hi,
Yes I have 12v on the pin two wire. I have disconnected just the pin 2 wire from the dme (just this wire all connectors plugged in ) and then I can still read 12v FROM the dme which means the voltage is coming out from the dme??? So I am reading 12v from the dme side not the engine loom side , hope this makes sense.
Any suggestions?
thanks
The connections on the DME are:
Plug 3, Pin 7 = 5V+, to CMP plug pin 3
Plug 3, Pin 20 = Signal, from CMP pin 2
Plug 3, Pin 17 = Ground, to CMP pin 1
If you disconnect DME Plug 3 pin 20, and are still getting 12v+ on CMP pin 2, then there is a short in the loom to a 12v supply.
If you are getting 12v+ from the DME Plug 3 pin 20, then it sounds like it might be a faulty DME.
Hi,
The daignostic manual i have says its plug 3 pin 20? I have continuity checked from this pin to cms pin 2 and it checks out.
Dme pin 20 has the battery voltage.
Do you have any info on the internals of the dme?
Have you had experience of the ecu repair places in the uk? Is it worth sending to them for testing and repair?
Many thanks for your help... This ones got me really stumped!
Sorry - you are correct, it is pin 20. (More haste, less speed required!). I will correct my pervious post.
I haven't and experience of ecu repair places, I'm afraid, but it is woth a shot, as a new one is £1455.
If you try to get a second hand unit, it will only be any good if it comes with the DME Programming Code. The units can be programmed for another car, but you need this code, and the Immobiliser Code from your own car.
This is a source reference. Confirm exact model applicability in the original material.
