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Home >> Hyundai >> 2019 >> Santa Fe SEL Plus, AWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> 4WD Control System Diagnosis >> DTC U0121: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> DTC Information And Inspection >> DTC Description

DTC Description

U0121 is set when an ESC (ESP) signal is not input during CAN communication between the 4WD ECM and the ESC (ESP) module.

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