C5X7 permanent error brake lights short circuit to plus

[cit-rotti]

Hello,

First the right brake light failed and then the left one too.
The centre brake light still works.
Permanent fault codes: A4BE and A4BF = short circuit on positive.

The bulbs are not defective - removed and checked for continuity.

How can I rectify this fault - where is the most likely location for this short circuit.

C5 X7//HDI 163//2014/ Orga 13609// VIN VF7**************[VIN obfuscated, can be read by forum staff]

Thank you for any information.

Greetings Wolfgang

[GiveMeABreak]

Here's the diagram Wolfgang.

2635 Is the right rear tail lamps and 2630 is the left rear tail lamp.

Only a guess, but the dual brake switch (2120) may be a suspect.

[Bounce]

I Got the same code today.
I have changes the led-lamp, make kabel fra the roof to the spoiler. When I test the connector I Got 12,5 volt without engine running.

What Cut be wrong?

I Almost give Up…

[citroenguy]

Broken BSI is a common culprit with these faults.