AutoCodes – KIA – B1906 KIA

B1906 KIA Code - Front Sensor PWM Signal Fault

Quick Answer

The Adaptive Front-Lighting System (AFLS) provides the driver with the best visibility by adjusting the vertical direction of the headlamp. Common causes include Faulty Front Height Sensor, Front Height Sensor harness is open or shorted, Front Height Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1906 KIA indicates Front Sensor PWM Signal Fault.
Common causes: Common causes include Faulty Front Height Sensor, Front Height Sensor harness is open or shorted, Front Height Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,595

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1906 KIA Description

The Adaptive Front-Lighting System (AFLS) provides the driver with the best visibility by adjusting the vertical direction of the headlamp. The AFLS drive Leveling Actuator-Intelligent Stepper Motor for adjusting up and down, and Swivel Actuator for adjusting right and left side. It consists of AFLS ECU, Leveling Actuator-Intelligent Stepper Motor, Swivel Actuator, Headlamp switch, Height sensor (not applied to ECS). Height sensor input information of vehicle's altitude to AFLS ECU. Height sensor consists of rotor, stator, PCB coil, sensor lever. The height sensor is not-contact point type sensor use lever's movements angle that measures formed the magnetic field at around stator by rotator's revolution.

OBDII Code B1906 KIA - Front Sensor PWM Signal Fault - AutoCodes.com — B1906 KIA Code - Front Sensor PWM Signal Fault

What does this mean?

What are the Possible Causes of the DTC B1906 KIA?

Faulty Front Height Sensor
Front Height Sensor harness is open or shorted
Front Height Sensor circuit poor electrical connection

How to Fix the DTC B1906 KIA?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1906 KIA code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1906 KIA Code

1. What are the common symptoms of OBDII code B1906 in a KIA, indicating a Front Sensor PWM Signal Fault?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the front impact sensor system.

2. What are the possible causes of the Front Sensor PWM Signal Fault OBDII code B1906 in a KIA?

- Possible causes may include a faulty front impact sensor, damaged wiring or connectors in the sensor circuit, or a problem with the airbag control module.

3. How can I diagnose the Front Sensor PWM Signal Fault OBDII code B1906 in my KIA?

- Diagnosing this code typically involves using a scan tool to retrieve the specific fault code and then inspecting the front impact sensor, wiring, and connectors for any visible damage or issues.

4. Can I still drive my KIA with the OBDII code B1906 Front Sensor PWM Signal Fault?

- It is not recommended to drive the vehicle with an active airbag system fault code, as it may compromise the effectiveness of the airbag system in the event of a collision.

5. How do I repair the Front Sensor PWM Signal Fault OBDII code B1906 in my KIA?

- Repairing this code usually involves replacing the faulty front impact sensor, repairing any damaged wiring or connectors, and clearing the fault code with a scan tool.

6. Is it safe to reset or clear the B1906 OBDII code related to the Front Sensor PWM Signal Fault in my KIA?

- It is safe to clear the code after resolving the underlying issue, but it is important to ensure that the fault has been properly addressed to prevent the code from reoccurring.

7. Are there any DIY tips for troubleshooting the Front Sensor PWM Signal Fault OBDII code B1906 in my KIA?

- DIY tips may include checking for loose or damaged wiring connections, inspecting the front impact sensor for physical damage, and ensuring all connectors are securely plugged in.

8. How much does it cost to fix the Front Sensor PWM Signal Fault OBDII code B1906 in a KIA?

- The cost of fixing this code can vary depending on the specific issue, but it may involve the cost of a new front impact sensor, labor for installation, and any additional parts or repairs needed.

9. Can a mechanic help me with diagnosing and fixing the Front Sensor PWM Signal Fault OBDII code B1906 in my KIA?

- Yes, a qualified mechanic with experience in airbag systems can assist in diagnosing the issue accurately and performing the necessary repairs to fix the fault code.

10. Will the Front Sensor PWM Signal Fault OBDII code B1906 in my KIA affect the vehicle's overall safety?

- Yes, this fault code relates to the airbag system, so it is crucial to address it promptly to ensure the airbags deploy correctly in the event of a collision for optimal safety.