Inside memory-equipped mirrors, a small potentiometer tracks the physical angle of the glass. Over time, the internal carbon tracks of this track wear out, creating a permanent internal short circuit that the door control module instantly flags. Step-by-Step Diagnostic Routine
: Check the OPR (Organization Parts Record) number on the door pillar. For vehicles produced after November 2, 2009, these codes are frequently "phantom" errors that can be ignored if functionality is normal. 2008 C5 2ltr hdi 138Bhp wiring diagrams. - French Car Forum
: Occurs if a replacement mirror without the "memory" or "indexing" sensor is installed on a vehicle programmed for those features. 4. Technical Resolution