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Home >> Kia >> 2020 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (4WD Control System Diagnosis) >> DTC U1121: Lost Communication With Electric Stability Program Module >> DTC Information >> DTC Description
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DTC Description

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

If ESP CAN message is not received within spcificied time, 4WD ECU sets DTC U1121.

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