D91DFD er en feil som er lagret i BMW-ens minne (en ISTA-feilkode, ikke en standard OBD-II P-kode).
Hva det betyr: Missing 'status, exterior lights, front electronics 2, right' message — receiver FRM/body module, transmitter LHMR (right headlight module). A loss of communication with the right front lighting; typical causes are connector corrosion/moisture or a faulty headlight module.
