The code appearing only when using advanced diagnostic tools like the or JLR-approved SDD/Pathfinder software. Primary Causes for 2021 Models
If you own a 2021 Land Rover (whether it’s a Velar, Discovery, Range Rover Sport, or Evoque) and your diagnostic scanner has just thrown up the code , you are not alone. This is a relatively common yet often misunderstood fault code specific to late-model Jaguar Land Rover (JLR) vehicles. land rover b1d9f11 2021
A short to ground in the wiring harness between the gateway module and the amplifier. Internal Amplifier Failure: A fault within the AAM itself. Recommended Steps The code appearing only when using advanced diagnostic
Set your multimeter to Ohms (Ω). Insert probes into the two pins designated for the occupancy sensor (refer to your wiring diagram; typically pins 3 and 4 on connector C3PS01B). A healthy sensor reads between 200Ω and 1.5kΩ depending on pressure. A reading of 0Ω or near-zero = short to ground. A short to ground in the wiring harness