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U0164

Overview

Code

U0164

Code Type

U

Code Class

U0

System

Network

Severity Level

Low

Emissions Related

false

Drivability Impact

None

Diagnostic Protocol

OBD2

Freeze Frame Useful

false

Code Definition

Diagnostic trouble code U0164 indicates a loss of communication with the HVAC control module

Symptoms

HVAC system inoperative; Check Engine Light

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Heating and air conditioning system communication

Possible Causes

Network wiring issues; Module fault

Diagnostic Steps

1 Inspect CAN bus connections; 2 Verify module power; 3 Scan HVAC module for internal faults; 4 Repair wiring or replace module

Drive Safety Notes

Driving is safe

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