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Home >> Hyundai >> 2021 >> Ioniq Plug-In Hybrid SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 29 (Double Clutch Transmission Diagnosis (PHEV) (2 Of 2)) >> DTC U0121-87: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> DTC Information >> DTC Description

DTC Description

WARNING: This page is about a different car, the 2021 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.

When the TCM cannot read the data from the IBAU through the CAN-BUS line, the TCM sets this code.

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