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P0343 - Cam position sensor fault

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

Discussion summary

YOUR RESEARCHP0343 - Cam position sensor fault

Leading reported evidence

Clean sensor the other, a porsche specialist

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

Two garages have checked, one just cleaned the sensor the other, a Porsche specialist, changed it.

P0343 - Cam position sensor fault
Frequently discussed work

Check cable issues

No successful repair reported for this finding.

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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

Any suggestions on where to check for cable issues?

P0343 - Cam position sensor fault
Read full discussion summary

Leading evidence: 'Clean sensor the other, a porsche specialist' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check cable issues' (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 · 3 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace sensor along

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

Yeah.....the clean was on a receipt before i picked up the car and the Porsche specialist replaced the sensor along with some other work I was having done.

P0343 - Cam position sensor fault

Check cable issues

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

Any suggestions on where to check for cable issues?

P0343 - Cam position sensor fault

Clean sensor

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

Clean the sensor ..

P0343 - Cam position sensor fault

Clean sensor encased in plastic

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

God knows how you clean a sensor encased in plastic ..

P0343 - Cam position sensor fault
Frequently discussed actions (10)

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

Check cable issues

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

Any suggestions on where to check for cable issues?

P0343 - Cam position sensor fault

Clean sensor

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

Clean the sensor ..

P0343 - Cam position sensor fault

Clean sensor encased in plastic

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

God knows how you clean a sensor encased in plastic ..

P0343 - Cam position sensor fault

Clean sensor the other, a porsche specialist

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

Two garages have checked, one just cleaned the sensor the other, a Porsche specialist, changed it.

P0343 - Cam position sensor fault

Replace sensor along

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

Yeah.....the clean was on a receipt before i picked up the car and the Porsche specialist replaced the sensor along with some other work I was having done.

P0343 - Cam position sensor fault

Replace sensor or "

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

at no point does it say replace the sensor or " Clean it " ..

P0343 - Cam position sensor fault

Replace wiring loom

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

Not pretty but unless you want to replace a wiring loom then this is how we do it .

P0343 - Cam position sensor fault

Run bypass

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
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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 run a bypass on the wiring from sensor to DME then r/t ..

P0343 - Cam position sensor fault

Run over the back so not

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 can see the cable run over the back so not that accessible.

P0343 - Cam position sensor fault

Run wires

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

you run new wires to the dme and do the same at that end ..

P0343 - Cam position sensor fault
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.

3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 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: 20261027T061840Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I keep getting a P0343 for the bank 1 cam position sensor. Two garages have checked, one just cleaned the sensor the other, a Porsche specialist, changed it. I still get the fault. I clear the code, run it for 30 mins and it's fine and then it pops back up as a pending again. It is intermittent. This has been on going for a year, I've just put up with it, but want to get it sorted. Any suggestions on where to check for cable issues? I can see the cable run over the back so not that accessible.

POST 2Original post

None of this is aimed at you .. Fault code info is below .. at no point does it say replace the sensor or " Clean it " .. God knows how you clean a sensor encased in plastic .. it's a magnetic based sensor with a metal wheel with gaps that generates a voltage depending on the metal or gap size on the wheel .. in this case on the inlet camshaft . Sometimes i do sit here .. read a comment and start banging my head against the desk .. fault code says its a wiring issue .. short to B+ would indicate the signal wire is getting a 12 volt feed at times . yes its intermittent .. most faults are in these circumstances .. Ok .. if it was me .. i would run a bypass on the wiring from sensor to DME then r/t .. depending on the usual occurrence of this i would either drive myself or give it to the customer to monitor .. if the fault doesn't happen then again then its a wiring issue .. if not we move on .. Supply voltage to the sensor is next followed by a faulty DME ,, we eliminate one bit after another until we are left with the fault basically . Clean the sensor .. lol .. sorry . bypass .. you cut the wires close to the sensor .. long enough so that you can rejoin .. you run new wires to the dme and do the same at that end .. enough spare wire to rejoin if needed .. Not pretty but unless you want to replace a wiring loom then this is how we do it . Final fix would be heat shrink over a solder connection with loom tape over that . Depending on the model year there are 1 or 2 cam sensors .. B1 only and it's an earlier car .

POST 3 / ORIGINAL POSTEROriginal post

Yeah.....the clean was on a receipt before i picked up the car and the Porsche specialist replaced the sensor along with some other work I was having done. It's a 2003 C2. There is a second cam sensor on bank2, but no codes from that so far. Would you test from the connector in the engine bay, or all the way back to the DME?

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