The small gauge wires inside the dashboard can chafe against metal brackets or sharp plastic edges. A "short to battery voltage" on the signal wire will instantly trigger a B1D1787. Similarly, corrosion in the connector (common in sunroof drain leak scenarios) can create resistance and voltage weirdness.
Typically refers to a fault in the Passive Entry (PE) System – specifically the Left Front Door Handle Sensor / Antenna Circuit . The "-87" suffix indicates a "Missing Message" or "Invalid/Corrupted Data" signal condition to the Remote Function Actuation (RFA) module or the Body Control Module (BCM/BCM-GW). land rover b1d1787
While this code can appear on many JLR (Jaguar Land Rover) products, it is most commonly reported on: The small gauge wires inside the dashboard can
Land Rover headlights are vented but not perfectly sealed. Over time, condensation builds up inside the left front headlight housing. When water reaches the circuit board or the turn signal bulb socket, it creates a bridge between the 12V turn signal wire and the constant 12V DRL (Daytime Running Light) wire. This triggers the "Short to Battery" (High Voltage) condition. Typically refers to a fault in the Passive
What is your Land Rover? (e.g., 2015 Discovery Sport, 2018 Range Rover) Are you seeing a specific error message on your dashboard?
