DTC U0420: Invalid Data Received From PSCM (power steering control module)

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2018 Lincoln MKZ, 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, and 2018 Ford Transit-150. However, it is still accessible from the selected car via links, so may be relevant.

Failure	Action
00	This DTC sets if the ABS module receives invalid steering wheel torque information. Using a diagnostic scan tool, RETRIEVE and DIAGNOSE all PSCM DTCs. REFER to DIAGNOSIS AND TESTING . If no PSCM DTCs are present, the DTC may be caused by an intermittent concern. SET the ignition to OFF. DISCONNECT and INSPECT all PSCM electrical connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary.
41	This DTC sets if the steering wheel angle sensor checksum is invalid. Using a diagnostic scan tool, RETRIEVE and DIAGNOSE all PSCM DTCs. REFER to DIAGNOSIS AND TESTING . If no PSCM DTCs are present, the DTC may be caused by an intermittent concern. SET the ignition to OFF. DISCONNECT and INSPECT all PSCM electrical connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary.
82	This DTC sets if the steering wheel angle sensor rolling counter message is out of range. Using a diagnostic scan tool, RETRIEVE and DIAGNOSE all PSCM DTCs. REFER to DIAGNOSIS AND TESTING . If no PSCM DTCs are present, the DTC may be caused by an intermittent concern. SET the ignition to OFF. DISCONNECT and INSPECT all PSCM electrical connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary.
86	This DTC sets if the information in the steering wheel angle sensor message is out of range or invalid. Using a diagnostic scan tool, RETRIEVE and DIAGNOSE all PSCM DTCs. REFER to DIAGNOSIS AND TESTING . If no PSCM DTCs are present, the DTC may be caused by an intermittent concern. SET the ignition to OFF. DISCONNECT and INSPECT all PSCM electrical connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary.