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Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 52 (Hybrid Control Processor Module (HCP) - DTCS U0001-00 To U0121-00) >> DTC Troubleshooting >> U0121-00-Lost Communication With Anti-Lock Brake System (Abs) Control Module "A"

U0121-00-Lost Communication With Anti-Lock Brake System (Abs) Control Module "A"

WARNING: This page is about a different variant/trim than selected.

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 .