Land Rover B1d9f-11 __link__ Info

An internal short within the Audio Amplifier Module itself.

An open or short circuit in the wiring harness connecting the engine speed signal to the audio unit. How To Fix An HDC System Fault In A 2025 Range Rover land rover b1d9f-11

While it sounds like a mechanical engine issue, this specific diagnostic trouble code (DTC) often affects the infotainment system—specifically features like Active Noise Cancellation or engine sound enhancement that rely on real-time engine speed data. An internal short within the Audio Amplifier Module itself