Lost Communication With Cabin Air Quality Sensor Module
The U0244 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Cabin Air Quality Sensor Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $100 - $400 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- Automatic air recirculation not working
- Air quality indicator not displaying
- Cabin air filtration not adjusting automatically
- Auto climate mode not detecting poor air
Probable Causes (Ranked by Likelihood)
- Failed air quality sensor Very High
- Sensor contamination High
- CAN bus wiring fault Moderate
- Software error in HVAC controller Low
Step-by-Step Diagnostic Procedure
-
Check air quality sensor location and cleanliness
-
Test sensor power supply
-
Scan air quality module for codes
-
Reset HVAC system and retest
Frequently Asked Questions
Can I drive with U0244?
Yes. Manually control air recirculation. This is a comfort feature only.
What causes U0244?
Usually a contaminated or failed air quality sensor.
How much does U0244 cost to fix?
Typically $100 to $400. The sensor itself is inexpensive.
Sources
This page is built from documented references. Verify against your own service info before repair work.
Explore More
Was this helpful?
Send this to whoever is fixing the car — your mechanic, or the person asking what the light means.