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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (Blind Spot Collision Warning Diagnosis) >> DTC C1646-81: CAN Message Failure - TCU >> DTC Information And Inspection >> DTC Description

DTC Description

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

C1646-81 sets when an abnormal signal regarding gear shift has been received between the BSD ECU and TCU module during CAN Communication. It turns OFF the BSD (Blind Spot Detection) switch LED and inhibits the system.

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