In some cases, the infotainment screen might have greyed-out options for radio or navigation. Primary Causes for the 2021 Model Year
Understanding Land Rover Diagnostic Code B1D9F:11 (2021 Model Year)
The amplifier uses an engine speed (RPM) signal for features like Active Noise Cancellation (ANC) or Speed Dependent Volume Control . If the amplifier cannot "see" this signal because the circuit is grounded, it triggers this DTC (Diagnostic Trouble Code). Common Symptoms land rover b1d9f11 2021
Physical damage to the wiring harness or connector pins can lead to a short against the vehicle's chassis.
Unlike a mechanical failure, this code might not always cause a "Check Engine" light. Instead, you may notice: In some cases, the infotainment screen might have
The code typically refers to the Audio Amplifier Module (AAM) .
If you own a —whether it’s a Range Rover, Discovery, or Defender—and your diagnostic tool has flagged the code B1D9F:11 , you are likely dealing with a specific electrical failure in the vehicle's infotainment or audio system. Common Symptoms Physical damage to the wiring harness
If you are diagnosing this yourself or taking it to a shop like Land Rover Sudbury , here is the typical order of operations:
