DTC U0452 Invalid Data Received From RCM: Action
WARNING: This page is about a different car, the 2017 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
CARRY OUT a self-test of the RCM. If the diagnostic scan tool indicates the module is not responding, REFER to Module Communications Network to diagnose the network communication concern. If RCM DTCs are present, REFER to Supplemental Restraint System to diagnose the RCM system fault. If there are no DTCs in the RCSM, SET the ignition to OFF. DISCONNECT and INSPECT all RCM electrical connectors and related in-line connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary.