Land Rover U0151-31 Official

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.

Diagnose network wiring to RCM. Check for corrosion. Replace RCM and reprogram if needed.

Lost communication with airbag control module (RCM). Signal invalid.

Based on the diagnostic trouble code (DTC) , this typically indicates a communication issue between the vehicle’s modules.

Failed RCM module, damaged CAN bus wiring, water intrusion, or power/ground issue.

Airbag system disabled. SRS light on. No airbag deployment in a crash.

= Lost Communication with Restraints Control Module (RCM) – Invalid/Incomplete Signal

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