BMW fault code 00A4

Stability control

In the stability control, code 00A4 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.

Valve exhaust / sensor rear left

Module version: Anti-lock Brake System MK4G (ABSMK4G)

In: 3 Series (E36) 1990–2000

DSC: Lateral-acceleration signal

Module version: Stability Control MK20 (DSC_E46)

In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, X5 (E53) 1999–2004, Z8 (E52) 2000–2003

Reading and clearing it

Fault code 00A4 is a BMW code, stored in the car's stability 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 stability control is on: 8 Series (E31), 7 Series (E32), 5 Series (E34), 3 Series (E36), Z3 (E36/7), 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53)

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