General Information

Active Air Flap
U0164 Lost Communication with HVAC Control Module - General Information

Component Location





Gerneral Description

AAF(Active Air Flap) have High and Low line in the CAN communication which receives each vehicle condition from EMS, FATC, TCU, MCU and LDC. With this informations, AAF controls Motor properly.

DTC Description

The A.A.F(=Active Air Flap) Actuator sets DTC P0164 when AAF detect that there is no CAN message from FATC.

DTC Detecting Condition





Diagnostic Diagram










CAN Signal : high & low