DTC U0164: Lost Communication With HVAC Control Module

Failure detection pattern :

"Primary" (high-priority diagnosis)

Warning light/indicator light :

Malfunction indicator light◦
Auto Start Stop warning light (yellow)◦

NOTE: For the diagnostic procedure, refer to "TRANSMISSION (DIAGNOSTICS)". Ref. to TRANSMISSION (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE .