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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 92 (Smart Key Unit Diagnosis (HEV)) >> DTC B1603: CAN Bus Off >> General Information >> DTC Description

DTC Description

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

Smartkey Module sets DTC B1603 if smart key module detects short to battery, short to ground in CAN HIGH and CAN low simultaneously.

This DTC means that both CAN HIGH and CAN LOW line are error. Therefore, CAN communication is not available.

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