BMW fault code 31791

31791 is a fault stored in your BMW's memory (an ISTA fault code, not a standard OBD-II P-code).

What it means:
Head unit (HU_MGU): a record of a Bluetooth phone connection. Related to Bluetooth pairing, not a vehicle fault.

Related codes: 31781 · 31782 · 31784 · 31785 · 31786 · 3178A · 31790 · 31793

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