P1602 Hyundai ECU-TCU Communication Error

P1602 Hyundai Code - Serial Communication Problem with TCM Faulty Transaxle Control Module(TCM) or Engine Control Module(ECM) Transaxle Control Module(TCM) to Engine Control Module(ECM) harness is open or shorted Transaxle Control Module(TCM) to Engine Control Module(ECM) circuit poor electrical connection How to Fix the DTC P1602 Hyundai?