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B1764 Hyundai Code - Body Sense MAT Defect

Quick Answer

The B1764 diagnostic trouble code for Hyundai vehicles refers to a Body Sense MAT Defect. Common causes include Faulty body sense mat sensor, Wiring issues or damaged connectors, Corrosion or water damage in the sensor system. 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
B1764 Hyundai indicates Body Sense MAT Defect.
Common causes
Common causes include Faulty body sense mat sensor, Wiring issues or damaged connectors, Corrosion or water damage in the sensor system.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code B1764 Hyundai Description

The B1764 diagnostic trouble code for Hyundai vehicles refers to a Body Sense MAT Defect. This code indicates an issue with the body sense mat, which is a component of the vehicle's safety system. The body sense mat is responsible for detecting the presence of occupants in the vehicle and triggering the appropriate safety measures, such as airbag deployment in the event of a collision. When this sensor is defective, it can compromise the accuracy of the safety system, potentially leading to improper deployment of airbags or seat belt pretensioners.

OBDII Code B1764 Hyundai - Body Sense MAT Defect
B1764 Hyundai Code - Body Sense MAT Defect

Common Causes of B1764 Hyundai

  1. Faulty body sense mat sensor
  2. Wiring issues or damaged connectors
  3. Corrosion or water damage in the sensor system
  4. Software malfunction in the airbag control module
  5. Impact or physical damage to the sensor system

Symptoms of B1764 Hyundai

  1. Airbag warning light illuminated on the dashboard
  2. Inconsistent or erratic airbag deployment
  3. Seat belt warning light activated even when seat belts are fastened
  4. Faulty passenger seat recognition system
  5. Loss of communication with the airbag control module

How to Fix B1764 Hyundai

  1. Diagnostic scan to confirm the B1764 code and pinpoint the exact cause of the issue
  2. Inspection of the body sense mat sensor, wiring, and connectors for damage or corrosion
  3. Repair or replacement of the faulty body sense mat sensor
  4. Clearing of the diagnostic trouble codes and resetting the airbag system
  5. Testing the airbag system to ensure proper functionality and sensor calibration

Cost to Fix B1764 Hyundai

The cost estimate for repairing a B1764 Body Sense MAT Defect code in a Hyundai vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair costs for this type of issue can range from $200 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can differ, so it's advisable to obtain quotes from multiple sources to get a more accurate estimate.

Need more information about the B1764 Hyundai code?

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1764 Hyundai Code

1. What are the common symptoms of OBDII code B1764 Hyundai (Body Sense MAT Defect)?

Common symptoms may include issues with the airbag system, such as the airbag warning light staying illuminated on the dashboard.

2. What are the possible causes of OBDII code B1764 Hyundai (Body Sense MAT Defect)?

The code may be triggered by a malfunction in the body sense mat sensor, damaged wiring, or a faulty airbag control module.

3. How can I diagnose OBDII code B1764 Hyundai (Body Sense MAT Defect)?

A professional diagnostic scan tool can be used to read and interpret the code, along with conducting a visual inspection of the wiring and sensor connections.

4. Can I continue driving my Hyundai with OBDII code B1764 (Body Sense MAT Defect) present?

It is not recommended to continue driving the vehicle with this code active, as it may indicate a potential safety issue with the airbag system.

5. How can I reset OBDII code B1764 Hyundai (Body Sense MAT Defect)?

Resetting the code may require fixing the underlying issue first. After repairs are made, a professional OBDII scanner can be used to clear the code.

6. What are the repair options for OBDII code B1764 Hyundai (Body Sense MAT Defect)?

Repair options may include replacing the body sense mat sensor, repairing damaged wiring, or replacing the airbag control module, depending on the specific cause of the issue.

7. Is OBDII code B1764 Hyundai (Body Sense MAT Defect) a serious problem?

Yes, this code should be addressed promptly to ensure the proper functioning of the airbag system in case of an accident.

8. Can a DIY enthusiast fix OBDII code B1764 Hyundai (Body Sense MAT Defect)?

While some experienced DIYers may attempt to fix this issue, it is recommended to consult a professional mechanic due to the complexity of the airbag system.

9. How much does it cost to repair OBDII code B1764 Hyundai (Body Sense MAT Defect)?

The cost of repair can vary depending on the exact cause of the issue and the labor rates of the repair shop. It is advisable to obtain quotes from multiple sources.

10. How long does it take to repair OBDII code B1764 Hyundai (Body Sense MAT Defect)?

The repair time can vary based on the specific cause of the issue and the availability of parts. In some cases, it may be resolved within a few hours, while in others, it may take longer for diagnosis and repair.

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