B7F89E is a fault stored in your BMW's memory (an ISTA fault code, not a standard OBD-II P-code).
Related codes: B7F500 · B7F805 · B7F84C · B7F87B · B7F8CB
Decode your BMW's fault memory automatically in Telegram
Free reference for owners. Not affiliated with BMW AG; BMW and CarData are trademarks of BMW AG.