Land Rover B1d1787 Verified -

Unlike codes that point to a cut wire or a blown fuse, this code specifically indicates that the The microprocessor or signal processing circuitry within the amplifier box has detected a fault inside the unit itself.

If you are seeing this error, the most frequent culprits include: TECHNICAL BULLETIN - nhtsa land rover b1d1787

: Moisture getting into the connector pins of the sounder often triggers the communication error and random activation. How to Fix It Unlike codes that point to a cut wire