This code tells the Body Control Module (BCM) that it has lost communication with the . Unlike the standard car horn, the BBUS has its own internal battery so it can scream even if a thief cuts the main car battery. When this internal battery dies or the wiring fails, the BCM throws this code. Common Symptoms
: A mismatch in encrypted data between the ESCL and the CJB, often occurring after a failed component replacement or software update. CAN Bus Integrity land rover b1d1787
What is your Land Rover? (e.g., 2015 Discovery Sport, 2018 Range Rover) Are you seeing a specific error message on your dashboard? This code tells the Body Control Module (BCM)