BMW fault code 0090
Rear-lid lift
HKL: 01 Internal fault in rear-lid module
Module version: Rear-lid lift (HKM)
In: 5 Series (E39) 1998–2003, 7 Series (E38) 1994–2001
Reading and clearing it
Fault code 0090 is a BMW code, stored in the car's rear-lid lift, 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 rear-lid lift is on: 7 Series (E38), 5 Series (E39)
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