BMW fault code 0004
Electronic Damper Control
EDC: Steering-angle signal (5 Vref external short to ground)
Module version: Electronic Damper Control (EDC4)
In: 5 Series (E39) 1998–2003
Reading and clearing it
Fault code 0004 is a BMW code, stored in the car's electronic damper control, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The electronic damper control is on: 8 Series (E31), 7 Series (E32), 5 Series (E34), 7 Series (E38), 5 Series (E39)
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