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Home >> Hyundai >> 2017 >> Tucson Value, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (4WD Control System Diagnosis) >> DTC U0121: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> DTC Information >> DTC Description

DTC Description

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

If the 4WD ECU doesn't get some ESP/ESC/VDC signals from ESP/ESC/VDC module, it sets U0121.

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