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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Active Air Flap-Left Diagnosis (HEV) >> DTC U0001: High Speed CAN Communication Bus off >> DTC Information >> DTC Description

DTC Description

AAF sets DTC U0001 when AAF can not receive or give any information through AAF Actuator.