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DTC B1765F1 - "Active noise cancelling basic settings not performed" (Bang & Olufsen) | Flying Spur | 26MY. Condition: For vehicles with a Bang & Olufsen sound system, the following DTC may be stored in the control module 005F (Information Electronics 1):
• B1765F1 – Active Noise Cancelling: Basic Settings Not Performed This may be accompanied by customer complaints of diminished active noise cancelling, or a warning in the diagnostic log after a module replacement or software update.