Scantool Diagnostics

Active Air Flap
U0164 Lost Communication with HVAC Control Module - Scantool Diagnostics

Monitor Scantool Data

1. Engine "ON".
2. Warm up the engine until the temperature reaches up to normal at EV mode with engine start status.
3. Using scantool, check if there is an error in FATC system.
If there is an error in FATC system, first do a troubleshooting for those system and then check A.A.F system.
4. Is the same DTC displayed again?