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Home >> Chrysler >> 2012 >> 300 Base, Trans Mfr CD 8HP45, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Transmission Control Module (TCM) - Nag1 Automatic Transmission) >> Diagnosis And Testing >> U0164-Lost Communication With HVAC Control Module >> Diagnostic Test

Diagnostic Test

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  1. VERIFY DTC IS ACTIVE 
    1. Turn the ignition on.
    2. With the scan tool, read the active DTCs.

      Does the scan tool display; U0164-LOST COMMUNICATION WITH HVAC CONTROL MODULE as Active?

      Yes 

      No 

      • Refer to  DIAGNOSIS AND TESTING  and perform the Stored Lost Communication DTCs diagnostic procedure.