BMW fault code 5F4F
Dynamic stability control
DSC: Hydraulic unit, changeover valve 2 (valve USV2 Valve voltage defective drift error wiring connection or output stage defective?)
Module version: Dynamic stability control Plus DSC8 (DXC_83)
In: X3 (E83) 2003–2010
Reading and clearing it
Fault code 5F4F is a BMW code, stored in the car's dynamic 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 dynamic stability control is on: 3 Series (E36), Z3 (E36/7), 3 Series (E46), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)
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