Failed RCM module, damaged CAN bus wiring, water intrusion, or power/ground issue.
Lost communication with airbag control module (RCM). Signal invalid.
= Lost Communication with Restraints Control Module (RCM) – Invalid/Incomplete Signal land rover u0151-31
Airbag system disabled. SRS light on. No airbag deployment in a crash.
Here is a draft text you could use for a repair order, a diagnostic summary, or a customer explanation. Vehicle: Land Rover [Insert Model, e.g., Range Rover / Discovery / Evoque] DTC: U0151-31 Description: Lost Communication with Restraints Control Module (RCM) – Signal Invalid Failed RCM module, damaged CAN bus wiring, water
Diagnose network wiring to RCM. Check for corrosion. Replace RCM and reprogram if needed.
Your Land Rover’s computer has lost communication with the Restraints Control Module (RCM) – the brain that controls the airbags and seatbelt pretensioners. The “-31” means the signal it is receiving is incomplete or invalid. = Lost Communication with Restraints Control Module (RCM)
Based on the diagnostic trouble code (DTC) , this typically indicates a communication issue between the vehicle’s modules.