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Planet-9

Airbag light (passenger's thorax and Communication PSM control unit)

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12 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHAirbag light (passenger's thorax and Communication PSM control unit)

Leading reported evidence

Reset code it'll stay off

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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 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

Then when I reset the code it'll stay off.

Airbag light (passenger's thorax and Communication PSM control unit)
Frequently discussed work

Replace water pump meaning

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

I had left my hatch and trunk open over night while replacing my water pump meaning that the interior lights stayed on.

Airbag light (passenger's thorax and Communication PSM control unit)
Read full discussion summary

Leading evidence: 'Reset code it'll stay off' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace water pump meaning' (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.

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1 matching discussions · 12 captured posts examined · 1 partial discussions

Compare 1 other evidence results

Replace water pump meaning

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 had left my hatch and trunk open over night while replacing my water pump meaning that the interior lights stayed on.

Airbag light (passenger's thorax and Communication PSM control unit)
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.

Replace water pump meaning

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

I had left my hatch and trunk open over night while replacing my water pump meaning that the interior lights stayed on.

Airbag light (passenger's thorax and Communication PSM control unit)

Reset code it'll stay off

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

Then when I reset the code it'll stay off.

Airbag light (passenger's thorax and Communication PSM control unit)
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.

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

  • Planet-9: 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: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

For reference, I have a 2010 Cayman (base) with 63K miles. My airbag light has recently come on and continues to go back after clearing it. Reading the codes with my iCarsoft POR II I am receiving the following: Code 801c - Passenger's thorax airbag, sort circuit to ground and Code c152 - Communication PSM control unit (drive) From what I have read, having the passenger's seat up against the engine firewall can trigger this code so I will move the seat up, clear the code and see what happens. Is this due to the cables just being stretched too far? As for the other code, does anyone have any ideas? Thanks

POST 2Original post

I was having issues with my airbag light. The technician at Autohause Lake Norman re calibrated it.

POST 3Original post

I get a PSM code if I unhook the battery . It goes away after driving a bit. When I left the key in all night and killed the battery I got the airbag light but after clearing the code it stayed off. Are you having battery issues ?

POST 4Original post

I had this same issue in my 987 when my wife would try to recline the seat too far. The airbag light would come on if there was too much pressure on the back part of the seat. Once the seat was readjusted the light went off.

POST 5Original post

I had a passenger airbag code in my car when I picked it up new. The PO had taken it to the dealer and had the code removed and it never came back.....fast forward a few weeks and I was detailing the interior and found a water bottle shoved under the seat. My guess is that the bottle some how interfered with the weight sensor. I removed the bottle and have never had a code since.

POST 6Original post

The first time these lights came on was from a drained battery . I had left my hatch and trunk open over night while replacing my water pump meaning that the interior lights stayed on. Went to start the car and the battery had drained. I recharged the battery and cleared the code and everything was fine. Now (three months or so later) the lights have come back on and come back as soon as they are cleared. I've moved the seat up from against the firewall but the codes still come back. I will be pulling the seat out and basically will just unplug and re- plug the harnesses and hopefully that will fix it... I guess if all else fails, I will take it to the dealer and maybe they can re-calibrate it. BudC, do you remember how much that might have ran you?

POST 7Original post

So I took the car to an independent Euro shop and they said that Porsche had posted a bulletin (at some point) about the air bag harnesses inside of the seat back causing resistance issues that would lead to throwing a code. They were leaning towards that. Found the part number and it looks like they did update the part from 997-612-786-01 to 997-612-786-02. A new harness is pretty cheap, but does anyone have experience taking the seats apart? I found this video which is sure to be helpful, but does anyone have experience taking off the seat cover and accessing said harness? https://www.youtube.com/watch?v=vpX4D693D1I

POST 8Original post

Anyone have issues with this harness? Just want to make sure it's truly the issue.

POST 10Original post

I suspect you won't get an answer - he was last on the forum over 9 months ago.

POST 11Original post

If I have my 997.1 passenger seat back leaned a little too far forward I get this to come in and it won't go off until I recline the seat a little. Then when I reset the code it'll stay off. ( iCarsoft POR II).

POST 12Original post

Sounds like a similar issue. For me reclining one stop from all the way back to the firewall would prevent the airbag light from coming up but eventually, that stopped working and the light was always on. Unfortunately there are multiple wire harnesses in the seats which could be the culprit. You'll have to scan to get the exact code which would tell you which harness might be on it's way out. The POR II should tell you. Here is a video I made a while back when I fixed mine. Not too bad of a job, but I did purchase the wrong harness initially and am out $180 bones...the harness I actually needed was quite a bit cheaper.

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