Pinpoint Test 37: DTC U0164 - Lost Communication With HVAC Control Module (EATC)

PINPOINT TEST 37: DTC U0164 - LOST COMMUNICATION WITH HVAC CONTROL MODULE (EATC)

Normal Operation

The instrument cluster sets DTC U0164 in continuous memory if data messages received from the climate control module over the High Speed Controller Area Network (HS-CAN) are missing. For a complete list of all network messages, see Communications Network - Control System.

Possible Causes
- Climate module
- Instrument cluster

Diagnostic Procedure