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Home >> Dodge and Ram >> 2018 >> Charger Pursuit, 5.7L Eng VIN T, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Electronic Shift Module (ESM) - Electrical Diagnostics - Nag1 Automatic Transmission) >> DTC Troubleshooting >> U0121-Lost Communication With Anti-Lock Brake Module

U0121-Lost Communication With Anti-Lock Brake Module

The COMMUNICATION DIAGNOSTIC PROCEDURE MUST  be performed before replacing any component(s) or module(s). Perform the COMMUNICATION DIAGNOSTIC PROCEDURE. Refer to COMMUNICATION DIAGNOSTIC PROCEDURE .