U023D
Lost Communication With Front Distance Range Sensor - Left
What it means
U023D means Lost Communication With Front Distance Range Sensor - Left.
Where it lives
For U023D, start at the sensor the description names.
Check these first
- Damage to the wiring or connector between the left front distance range sensor and the computer
- A failed left front distance range sensor
- Corrosion or water at the sensor connections
- The sensor fitted or mounted wrong
- A software or firmware fault in the computer
What to do next
- Inspect the left front sensor connector for damage or corrosion
- Check the sensor face for damage or obstruction
- Test the sensor wiring to the computer for shorts and opens
- Scan for other codes tied to the distance sensor circuit
- Replace the left front distance range sensor if it does not report
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.