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Planet-9

Multiple fault codes and car wont start-help

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YOUR RESEARCHMultiple fault codes and car wont start-help

Leading reported evidence

Disconnect positive and the negative and left

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Discussions that report an unsuccessful attempt
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Unsuccessful attempt

I disconnected both the positive and the negative and left for 2 hours No Change

Original post Read captured discussion
Multiple fault codes and car wont start-help
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Leading evidence: 'Disconnect positive and the negative and left' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect positive and the negative and left' (1 discussions). For that action, 0 discussions report a resolution and 1 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.

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1 matching discussions · 4 captured posts examined · 1 partial discussions

Frequently discussed actions (1)

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Disconnect positive and the negative and left

No successful repair reported for this finding.

0
Reported fixes
1
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report an unsuccessful attempt
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.

Unsuccessful attempt

I disconnected both the positive and the negative and left for 2 hours No Change

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Multiple fault codes and car wont start-help
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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.

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

  • Planet-9: 1 discussions

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Generation: 20261026T112012Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Ok my worst nightmare.. and its passed halloween. Decided to put in an aftermarket stereo. Pretty easy setup. Wired it up and it works. Now come the issue... I wanted to tap into the fuse panel for an accessory tap. After looking at all the forum right ups there was no consistency into what i could tap into ( which fuse )soo..... i turned the key to acessory and started pulling fuses until if found one. I had gone through about 10 fuses. I had also removed the cover under neath the steering wheel to hide all the wires. Put the fuses back and decided to start the car.... A bunch of fault code came up and the car wont start. A loud noise of fans turning on in the front of the car whirling at excessive speeds. Cannot start the car because it tells me to depress the clutch ( which i am ) I tried to clear the fault codes with the durametric cable but they are not cleared. The faults are Work Log Short Test Bosch Digital Motor Electronics Motronic 7.8.1 Porsche Stability Management - PSM Current Fault Codes C150: Control unit communication engine electronics (drive) 5281: Version coding incorrect 4444: Steering-angle sensor not initialized Porsche Active Suspension Management - PASM Current Fault Codes C203: Fault steering wheel electronics control unit (drive) C152: Communication PSM control unit (drive) C150: Control unit communication engine electronics (drive) 0010: Button LED Tire Pressure Monitor - TPM Instrument cluster - 9x7 Current Fault Codes C150: Control unit communication engine electronics (drive) C152: Communication PSM control unit (drive) Vehicle Electrical System Current Fault Codes 8035: Left seat heater C152: Communication PSM control unit (drive) C202: Fault PSM control unit (display) C150: Control unit communication engine electronics (drive) C140: Communication instrument cluster (display) Airbag - POSIP Current Fault Codes C150: Control unit communication engine electronics (drive) C141: Communication PCM (display) Advanced Weight System - AWS Steering Column Electronics Current Fault Codes C152: Communication PSM control unit (drive) Air Conditioning Current Fault Codes 8001: Terminal 30 voltage supply C141: Communication PCM (display) C150: Control unit communication engine electronics (drive) C152: Communication PSM control unit (drive) C131: Communication gateway control unit (CAN comfort) Cornering Lights Gateway Current Fault Codes C144: Communication CDR (display) C150: Control unit communication engine electronics (drive) C152: Communication PSM control unit (drive) Porsche Access System - PAS Current Fault Codes 8004: Terminal 50 8005: Terminal S C202: Fault PSM control unit (display) C152: Communication PSM control unit (drive) C150: Control unit communication engine electronics (drive) Front Body Module Current Fault Codes 8015: Terminal 15 redundantly faulty C152: Communication PSM control unit (drive) C202: Fault PSM control unit (display) C150: Control unit communication engine electronics (drive) C200: Control module fault engine electronics (drive) Rear Body Module Current Fault Codes C128: Communication PAS (comfort) control unit C122: Communication driver's door control unit (comfort) C150: Control unit communication engine electronics (drive) C152: Communication PSM control unit (drive) Left Door Module Current Fault Codes 8601: Door safety light/ door handle light C152: Communication PSM control unit (drive) C150: Control unit communication engine electronics (drive) Right Door Module Current Fault Codes 8703: Door h. button outer sh. stroke 8601: Door safety light/ door handle light 8704: Door h. button inner sh. stroke C152: Communication PSM control unit (drive) 8908: Power window thermal protection C150: Control unit communication engine electronics (drive) Park Assist Seat Memory Sports Chronometer Short Test Bosch Digital Motor Electronics Motronic 7.8.1 Porsche Stability Management - PSM No Faults Found Porsche Active Suspension Management - PASM Current Fault Codes C203: Fault steering wheel electronics control unit (drive) C150: Control unit communication engine electronics (drive) Tire Pressure Monitor - TPM Instrument cluster - 9x7 No Faults Found Vehicle Electrical System Current Fault Codes C150: Control unit communication engine electronics (drive) Airbag - POSIP Current Fault Codes C150: Control unit communication engine electronics (drive) C141: Communication PCM (display) Advanced Weight System - AWS Steering Column Electronics No Faults Found Air Conditioning Current Fault Codes 8001: Terminal 30 voltage supply C141: Communication PCM (display) C150: Control unit communication engine electronics (drive) C152: Communication PSM control unit (drive) C131: Communication gateway control unit (CAN comfort) Cornering Lights Gateway No Faults Found Porsche Access System - PAS Current Fault Codes C150: Control unit communication engine electronics (drive) Front Body Module Current Fault Codes C150: Control unit communication engine electronics (drive) C200: Control module fault engine electronics (drive) Rear Body Module No Faults Found Left Door Module No Faults Found Right Door Module No Faults Found Park Assist Seat Memory Sports Chronometer Short Test Bosch Digital Motor Electronics Motronic 7.8.1 Porsche Stability Management - PSM No Faults Found Porsche Active Suspension Management - PASM Current Fault Codes C203: Fault steering wheel electronics control unit (drive) C150: Control unit communication engine electronics (drive) Tire Pressure Monitor - TPM Instrument cluster - 9x7 No Faults Found Vehicle Electrical System No Faults Found Airbag - POSIP Current Fault Codes C150: Control unit communication engine electronics (drive) C141: Communication PCM (display) Advanced Weight System - AWS Steering Column Electronics No Faults Found Air Conditioning Current Fault Codes 8001: Terminal 30 voltage supply C141: Communication PCM (display) C150: Control unit communication engine electronics (drive) C152: Communication PSM control unit (drive) C131: Communication gateway control unit (CAN comfort) Cornering Lights Gateway No Faults Found Porsche Access System - PAS Current Fault Codes C150: Control unit communication engine electronics (drive) Front Body Module No Faults Found Rear Body Module No Faults Found Left Door Module No Faults Found Right Door Module No Faults Found Park Assist Seat Memory Sports Chronometer The battery is 2 years old and holds a charge just fine I disconnected both the positive and the negative and left for 2 hours No Change Any help would be appreciated.

POST 2Original post

Since it's telling you to depress the clutch have you tried bypassing the clutch starter interlock switch? It seems to be a fairly common problem on 987.1 cars. Other than that possibility nothing stands out to me. Not sure why the faults won't clear. I suspect that many will once the car is running.

POST 3Original post

Thanks. Ironically it was a simple fix. It had to do with three fuses that had not been installed. Once the fuses were in and i hooked up the battery all the errors went away and i am good as gold.

POST 4Original post

After reading down your list I was not sure if I should cry or laugh. I learned many years ago that when it comes to OBCs, and smart phones for that matter, they are a lot smarter than I am. I'm happy to read that everything worked out in the end.

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