BMW fault code 0056
Convertible-top module
CVM: Short circuit between output, relay, convertible top drive, and valve, emergency release
Module version: Convertible-top module (CVM_II)
In: 3 Series (E46) 1998–2006
Reading and clearing it
Fault code 0056 is a BMW code, stored in the car's convertible-top 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 convertible-top module is on: 3 Series (E46), Z8 (E52), Z4 (E85), Z4 (E86)
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