ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Find Your OBD2 Code Fast

Type the code from your scanner to get causes, symptoms, and fixes.

Code B0126

Quick reference

B0126 at a glance

Plain-language meaning
This code means there's a problem with the camera that watches the driver to make sure they're paying attention. It's like when your phone's camera isn't working right.
Urgency
Moderate – While the vehicle may still be drivable, the driver monitoring system is an important safety feature.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Calibration tool

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the camera that watches the driver to make sure they're paying attention. It's like when your phone's camera isn't working right.

Explanation

The B0126 code indicates an issue with the driver monitoring camera system, which is responsible for tracking the driver's attention and alertness.

Technical description

The driver monitoring camera is part of an advanced driver assistance system (ADAS) that uses sensors and cameras to monitor the driver's face and eyes. This system helps ensure the driver remains attentive and can alert them if they appear distracted or drowsy. A B0126 code is triggered when the system detects a malfunction or communication error with the camera.

Symptoms

• Warning light on the dashboard

• Driver monitoring system not functioning

• Alerts or warnings about driver attention not working

Common Causes

• Faulty driver monitoring camera

• Wiring issues or poor connections

• Software or calibration errors

Glossary

ADAS: Advanced Driver Assistance System

OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics

Diagnosis steps

• Check for any visible damage to the camera or its housing.

• Inspect the wiring and connections for any signs of wear or damage.

• Use a diagnostic tool to check for additional error codes or issues.

Repair procedures

• Replace the faulty driver monitoring camera.

• Repair or replace damaged wiring or connectors.

• Recalibrate the camera system using specialized equipment.

Tools required

• OBD-II scanner

• Multimeter

• Calibration tool

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Subaru Outback

• Mazda CX-5

Preventive measures

• Regularly inspect the camera for damage or obstructions.

• Ensure software updates are installed promptly.

• Keep the windshield clean and free of debris.

Error code type

Sensor Issue

User experience recommendations

• Avoid tampering with the camera or its settings.

• Schedule regular maintenance checks for the ADAS system.

Warranty information

Check with your vehicle manufacturer, as the camera may be covered under warranty if the vehicle is relatively new.

Historical data

The B0126 code has become more common as driver monitoring systems have been increasingly implemented in modern vehicles for enhanced safety.

Urgency level

Moderate – While the vehicle may still be drivable, the driver monitoring system is an important safety feature.

Testing conditions

• Vehicle parked in a well-lit area

• Ensure the camera lens is clean and unobstructed

Component location

The driver monitoring camera is typically located near the rearview mirror or on the dashboard facing the driver.

FAQs

Q: Can I drive with a B0126 code?
A: Yes, but it's not recommended as the driver monitoring system may not function properly, reducing safety.

Q: How do I reset the B0126 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.

Optional diagnostic gear

Tools that may help diagnose B0126

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Body and airbag faults often need a scanner that can access more than generic powertrain codes.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking power, ground, and continuity in body-system circuits.

View on Amazon
Bussmann Fuse Assortment diagnostic tool illustration

Universal · Fuse kit

Bussmann Fuse Assortment

Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.

Useful when body electrical faults trace back to blown fuses or shared circuits.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
🌙