DTC U0554: Invalid Data Received from Accessory Protocol Interface Module: Action

This DTC sets if the SASM receives invalid data from the center stack feature configuration message. RETRIEVE and DIAGNOSE all APIM and GWM DTCs. REFER to the Diagnosis and Testing in the appropriate Information and Entertainment Systems article or Multifunction Electronic Modules . If no DTCs set in the APIM or the GWM, the DTC may be caused by an intermittent concern. SET the ignition to OFF. DISCONNECT and INSPECT all APIM and GWM electrical connectors and related in-line connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary.