OBD Codes List

Diagnostic reference · B0126

B0126

Driver Monitoring Camera

System
Body control (B code)
Lamp
Body Warning Light
Category
Body

What it means

B0126 means Driver Monitoring Camera.

Check these first

  • The driver monitoring camera has failed or lost power
  • An open or short in the camera signal circuit
  • A blocked or dirty camera lens
  • The camera module is not communicating on the bus

What to do next

  1. Check power and ground at the driver monitoring camera
  2. Inspect the camera connector for corrosion
  3. Clean the camera lens and clear any obstruction
  4. Test the camera signal circuit for opens and shorts
  5. Replace the driver monitoring camera if it does not respond
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.