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Rear camera blue screen fault finding advice

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Old Jan 31, 2026 | 02:03 PM
  #1  
pagoda's Avatar
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Rock Crawling
Joined: Aug 2020
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From: Ontario
Default Rear camera blue screen fault finding advice

I have a 2016 D4 Lux with surround cameras. The rear view camera and front right mirror camera show a blue screen with the camera icon crossed out. I couldn’t care less about the other cameras, but since my wife drives this car the rear camera is important.

I have the following fault on the IID tool: B12BD-19(2c) rear camera blue screen- general electrical failure - circuit current above threshold. Clearing it or performing a hard reset does nothing.

I removed the rear camera and found corrosion around the pins, as well as moisture inside so assume it was the camera so ordered a new one. On fitting the new one today the situation remains - no change, so the camera would not seem to be the issue. I would appreciate any advice on what else to try before I go on a hunt for the camera interface module that sits under the driver’s seat.

I have:

- replaced the camera
- visually checked the wiring
- read every post I can find on every forum and am none the wiser

Grateful for any advice, or whether the next step is to find a replacement module.

Thanks,
 
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Old Feb 1, 2026 | 11:35 AM
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Richard Gallant's Avatar
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From: Mission BC Canada
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I would check the voltage at the camera, the error implies an over voltage issue. As well check the fuses and make sure it is the correct fuse is in there.
 
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Old Feb 1, 2026 | 01:42 PM
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pagoda's Avatar
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Rock Crawling
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From: Ontario
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@Richard Gallant Thanks. I will check the fuses. Forgive what maybe a stupid question but would you check the voltage at the 6 pin lead going into the camera? I don’t know what the voltage should be. Would that be in the workshop manual do you know?
 
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Old Feb 2, 2026 | 11:05 AM
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Richard Gallant's Avatar
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From: Mission BC Canada
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@pagoda It should be in the electrical diagram. But you could see if you can find out who makes the camera and get the specs that way
 
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