Lost Communication With HVAC Data Display Module
The U0190 code means the vehicle's onboard diagnostic system has detected: Lost Communication With HVAC Data Display Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- HVAC display screen blank or unresponsive
- Temperature and fan settings not displayed
- Climate control buttons not responding
- Rear HVAC controls inoperative
- Auto climate mode not functioning
Probable Causes (Ranked by Likelihood)
- Failed HVAC display module or control panel Very High
- Damaged wiring to HVAC display High
- Corroded connector behind HVAC panel Moderate
- Software fault requiring module reset Low
Step-by-Step Diagnostic Procedure
-
Check the HVAC control panel fuse
-
Inspect the connector behind the climate control panel
-
Verify power and ground at the HVAC display module
-
Try a battery disconnect reset to clear software faults
-
Check if the HVAC system still blows air (indicating only display is affected)
Frequently Asked Questions
Can I drive with code U0190?
Yes, safe to drive. The HVAC system may still function at its last settings even though the display is not working.
What causes U0190?
Usually a failed HVAC display module or control panel. The panel is a common wear item especially on vehicles with touch-sensitive buttons.
Is U0190 expensive to fix?
Typically $100 to $500. Replacement HVAC control panels are moderately priced and are usually a straightforward swap.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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