Home >> Lincoln >> 2021 >> Aviator Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Electronic Power Assist Steering (EPAS) Guided Routine >> DTC/Symptom Selection >> DTC Index >> PSCM - Power Steering Control Module >> DTC U0121: Lost Communication With The Anti-Lock Brake System (Abs) Control Module >> Possible Causes