The code typically refers to the Audio Amplifier Module (AAM) .
The amplifier may go into protection mode, resulting in zero audio.
A: You can clear the code using an OBD2 scanner. However, if the underlying problem (such as a wiring short or failing battery) has not been fixed, the code will almost certainly return, often within a few drive cycles. land rover b1d9f11 2021
The screen flashed red with code : Engine Speed Input - Circuit Short to Ground . The Investigation
In 2021 Land Rovers, this fault is most frequently traced to one of the following: The code typically refers to the Audio Amplifier
A technician will refer to JLR electrical circuit diagrams to trace the crank signal input circuit leading to the Audio Amplifier Module. They will check the wiring harness for: Open circuits High resistance
When this code appears on a 2021 Land Rover (model year specific due to changes in JLR’s electrical architecture introduced around late 2020/early 2021), owners report the following: However, if the underlying problem (such as a
In the world of Land Rover diagnostics, the fault code (often formatted as
Put simply: indicates that a component on the vehicle’s body control network—most commonly an Interior Light, Door Handle Light, or Puddle Lamp—has developed an electrical short to the vehicle’s ground circuit. The “2021” reference is crucial because mid-2020 to 2021 models saw a major electrical architecture overhaul (moving to the new Electrical Vehicle Architecture, or EVA 2.0).
The AAM itself is faulty and is creating an internal short.
Because modern JLR vehicles can throw "ghost codes" due to low battery voltage or software hiccups, the first step is to clear the DTC using a JLR-compatible OBD-II scanner. If the code clears and does not return, it may have been an isolated event. If it returns immediately, a hard fault exists in the circuit. Step 2: Inspect the Wiring Harness