BMW fault code 0009
Tire pressure control
In the tire pressure control, code 0009 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.
RDC: RDC control module faulty (hardware defect R/W check EEPROM)
Module versions: Tire pressure control (RDC_53), Tire pressure control (RDC_KBUS)
In: X3 (E83) 2003–2010, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008
Hardware: RAM error timer processor
Module version: Tire pressure control (RDC)
In: 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, 7 Series (E38) 1998–2001, X5 (E53) 1999–2006, Z8 (E52) 2000–2003
RPA: Speed pulses RL
Module version: Deflation Detection System (DWS)
In: 3 Series (E46) 1998–2006, X5 (E53) 1999–2004, Z8 (E52) 2000–2003
Reading and clearing it
Fault code 0009 is a BMW code, stored in the car's tire pressure 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 tire pressure control is on: 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)
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