OBD Guide

B0126

Driver Monitoring Camera

B0126 is an OBD-II diagnostic trouble code meaning: Driver Monitoring Camera. Common causes: camera damage, open or shorted wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Dashboard warning for driver monitoring system malfunction
  • Turning off the fatigue warning feature
  • The system does not respond to driver actions

Causes

  • Camera damage
  • Open or shorted wiring harness
  • Control unit malfunction
  • Camera power problems

How to Fix

  1. Checking the integrity of the camera wiring harness
  2. Camera power diagnostics
  3. Checking the camera for mechanical damage
  4. Replacing the camera if necessary
  5. Reset error after repair

Error B0126 by Vehicle Brand

FAQ

What does the B0126 code mean?

B0126 is an OBD-II diagnostic trouble code that indicates: Driver Monitoring Camera

What causes a B0126 error code?

The most common causes of B0126 include: Camera damage; Open or shorted wiring harness; Control unit malfunction; Camera power problems.

How do I fix a B0126 diagnostic trouble code?

To fix B0126: Checking the integrity of the camera wiring harness. Camera power diagnostics. Checking the camera for mechanical damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B0126?

Limited driving only, diagnose soon

How much does it cost to fix B0126?

The estimated repair cost for B0126 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat