Sound from the Meridian audio system may drop out unexpectedly or crackle when the vehicle accelerates.
The diagnostic trouble code (DTC) represents a highly specialized electrical fault commonly surfaced during routine diagnostics on modern Jaguar Land Rover (JLR) vehicles. Specifically, this code breaks down to B1D9F-11: Engine Speed Input - Circuit Short to Ground , signaling that a module on the vehicle's high-speed communications network is receiving a corrupted or completely grounded RPM/crankshaft signal. On 2021 model-year vehicles—such as the Range Rover, Range Rover Sport, Defender, and Discovery—this code typically impacts the Audio Amplifier Module (AAM) or the Infotainment Master Controller (IMC) , leaving many luxury SUV owners scratching their heads when it shows up on a scanner. land rover b1d9f11 2021
: In rare cases where the code is related to steering wheel controls, the issue might be an open circuit in the remote control switch path. This would be addressed by inspecting or replacing the relevant steering wheel switch components. Sound from the Meridian audio system may drop
If the code returns instantly as a hard fault, it is time to check the physical hardware: On 2021 model-year vehicles—such as the Range Rover,