DTC U0164-00: Lost communication with HVAC - Missing message: Action
- Refer to the appropriate electrical circuit wiring diagrams and check the power and ground connections to the climate control module
- Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the appropriate electrical circuit wiring diagrams and check the CAN network between the climate control module and the instrument cluster
- Check the climate control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index