031781 é uma falha armazenada na memória do seu BMW (código ISTA, não um código OBD-II P padrão).
O que significa: Head unit (HU-H) — Real-Time Traffic Information (RTTI) functionally limited. This is NOT a faulty part: it's an ambient/back-end issue (temporary loss of the traffic-data connection or a back-end restriction). Replacing components won't help — it clears itself once the service/connection is back. Informational, nothing to worry about.
