DTC B1B01-87: Key Transponder - Missing message: Action

WARNING: This page is about a different car, the 2016 Land Rover LR4, 2015 Land Rover LR4, and 2014 Land Rover LR4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This DTC may be set if the engine start switch is operated without a valid smart key present

Refer to the appropriate system wiring diagrams and check the keyless vehicle module power and ground circuits for open circuit, high resistance
Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the appropriate system wiring diagrams and check the medium speed CAN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance
Using the manufacturer approved diagnostic system, re-configure the keyless vehicle module as a new module