BMW fault code D9C4
Power module
In the power module, code D9C4 means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
PM: K-CAN line fault
Module versions: Power module (POW_65_2), Power module (POW_65_3), Power module (POW_E65)
In: 7 Series (E65) 2001–2008, 7 Series (E66) 2002–2008, 7 Series (E67) 2002–2008
MPM: K-CAN wire fault
Module version: Micro-power module (MPM_60)
In: 5 Series (E60) 2003–2010, 5 Series (E61) 2004–2010, 6 Series (E63) 2003–2010, 6 Series (E64) 2004–2010
Reading and clearing it
Fault code D9C4 is a BMW code, stored in the car's power module, 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 power module is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67)
Coming soon
Enter your email address to hear when AutoLingo for BMW is ready.