Lost Communication With Driver Monitoring Camera Module
The U0243 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Driver Monitoring Camera Module. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $300 - $1,000 (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
- Driver attention monitor not working
- No drowsiness detection alerts
- Driver monitoring camera error message
- Hands-on-wheel detection disabled
Probable Causes (Ranked by Likelihood)
- Failed driver monitoring camera Very High
- Camera lens obstruction High
- CAN bus wiring fault to camera Moderate
- Software error in monitoring system Low
Step-by-Step Diagnostic Procedure
-
Clean driver monitoring camera lens
-
Check camera power supply and connector
-
Scan driver monitoring module for codes
-
Verify module software version
Frequently Asked Questions
Can I drive with U0243?
Yes, but stay extra alert. Driver monitoring features like drowsiness detection will not work.
What causes U0243?
Usually a failed camera or obstructed lens. Sunlight glare can also cause temporary issues.
Is driver monitoring required?
It is required for Level 2+ driving assist systems like Super Cruise and BlueCruise.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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