BMW fault code 001A
Tire pressure control
Hardware: RDC button short circuit to ground
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
Reading and clearing it
Fault code 001A 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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