U0164 Low Network

Lost Communication With HVAC Control Module

Common Causes

Failed HVAC control module
CAN bus fault to HVAC
Module power or ground fault

Common Symptoms

Multiple Warning Lights On Communication / Network Fault

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Quick Info

Code U0164
System Network
Severity Low

Disclaimer

This information is for diagnostic guidance only. Always verify repairs with a qualified technician before performing safety-critical work.

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