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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Automatic Transmission (Re0F10E) (DTC/Circuit Diagnosis) (Except Hybrid) (1 Of 2)) >> DTC/Circuit Diagnosis >> DTC U0164: Lost Communication (HVAC) >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC CONSULT screen terms
(Trouble diagnosis content)		 DTC detection condition Possible causes
U0164 LOST COMM (HVAC)
(Lost Communication With HVAC Control Module)		 When the ignition switch is ON, TCM is unable to receive the CAN communications signal from A/C auto amp. continuously for 2 seconds or more.
  • A/C auto amp.
  • Harness or connector

    (CAN communication line is open or shorted)
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