Land Rover B1d1787 〈720p · HD〉

On higher trims with full-LED headlights, a small driver module inside the headlight controls the turn signal. If this module fails internally, it can send B+ voltage back down the control line, throwing the B1D1787 code.

control module and other systems like the Central Junction Box (CJB) or Instrument Cluster. The "-87" suffix specifically denotes a failure characterized by a "Missing Message". Understanding DTC B1D17-87 land rover b1d1787

The "B1D17-87" is not a model or a legendary vehicle, but a specific diagnostic trouble code (DTC) On higher trims with full-LED headlights, a small

What is your Land Rover? (e.g., 2015 Discovery Sport, 2018 Range Rover) Are you seeing a specific error message on your dashboard? The "87" suffix specifically points to a "Missing

The "87" suffix specifically points to a "Missing Message" fault, meaning the central control module is not receiving data from the sensor located on the battery's negative terminal. Causes and Diagnostics