AutoCodes – Hyundai – B1490 Hyundai

B1490 Hyundai Code - Passenger Occupant Classification Sensor Defect

Quick Answer

The passenger occupant classification system consists of the Supplemental Restraints System Control Module (SRSCM) and the Occupant Classification (OC) Module. Common causes include Faulty Occupant Classification (OC) Module, Occupant Classification (OC) Module harness is open or shorted, Occupant Classification (OC) Module 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: B1490 Hyundai indicates Passenger Occupant Classification Sensor Defect.
Common causes: Common causes include Faulty Occupant Classification (OC) Module, Occupant Classification (OC) Module harness is open or shorted, Occupant Classification (OC) Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 35,921

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 Apr 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1490 Hyundai Description

The passenger occupant classification system consists of the Supplemental Restraints System Control Module (SRSCM) and the Occupant Classification (OC) Module. The Diagnostic Trouble Code (DTC) is recorded when a defect or communication error of the OC Module is detected in the OC Module circuit.

OBDII Code B1490 Hyundai - Passenger Occupant Classification Sensor Defect - AutoCodes.com — B1490 Hyundai Code - Passenger Occupant Classification Sensor Defect

What does this mean?

What are the Possible Causes of the DTC B1490 Hyundai?

Faulty Occupant Classification (OC) Module
Occupant Classification (OC) Module harness is open or shorted
Occupant Classification (OC) Module circuit poor electrical connection
Faulty Supplemental Restraints System Control Module (SRSCM)

How to Fix the DTC B1490 Hyundai?

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 B1490 Hyundai 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.

Need more information about the B1490 Hyundai code?

Need more information on how to fix the B1490 Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1490 Hyundai code diagnosed by a professional: Find a repair shop in your area

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 B1490 Hyundai Code

1. What are the common symptoms of OBDII code B1490 in a Hyundai related to the Passenger Occupant Classification Sensor Defect?

- Common symptoms include the airbag warning light illuminating on the dashboard and the passenger airbag system potentially being disabled.

2. What causes the B1490 code to trigger in a Hyundai?

- The B1490 code is triggered when the Passenger Occupant Classification System (OCS) sensor detects a defect or malfunction in the system.

3. How serious is the B1490 code related to the Passenger Occupant Classification Sensor Defect in a Hyundai?

- The B1490 code should be taken seriously as it affects the proper functioning of the passenger airbag system, which is crucial for occupant safety in the event of a collision.

4. Can I continue driving my Hyundai with the B1490 code present?

- It is not recommended to continue driving the vehicle with the B1490 code present, as the passenger airbag system may not deploy correctly in the event of an accident.

5. How can I diagnose the cause of the B1490 code in my Hyundai?

- Diagnosing the cause of the B1490 code typically requires a professional scan tool to read the specific diagnostic trouble code and further testing of the Passenger Occupant Classification System components.

6. Is it possible to repair the Passenger Occupant Classification Sensor defect causing the B1490 code in a Hyundai myself?

- Repairing the Passenger Occupant Classification Sensor defect may require specialized knowledge and tools, so it is recommended to have the system diagnosed and repaired by a qualified mechanic.

7. What are some tips for repairing the B1490 code related to the Passenger Occupant Classification Sensor Defect in a Hyundai?

- Tips for repair may include checking and cleaning the sensor connections, inspecting for damaged wiring, and replacing the sensor or related components as needed.

8. Can resetting the OBDII system clear the B1490 code in my Hyundai?

- Resetting the OBDII system may temporarily clear the B1490 code, but if the underlying issue with the Passenger Occupant Classification Sensor defect is not addressed, the code is likely to reappear.

9. How much does it typically cost to repair the B1490 code related to the Passenger Occupant Classification Sensor Defect in a Hyundai?

- The cost of repairing the B1490 code can vary depending on the specific cause of the issue, but it may involve replacing the sensor or related components, which can range from a few hundred to a thousand dollars.

10. Are there any recalls or technical service bulletins related to the B1490 code in Hyundai vehicles?

- It is recommended to check with a Hyundai dealership or the National Highway Traffic Safety Administration (NHTSA) to see if there are any recalls or technical service bulletins related to the B1490 code and the Passenger Occupant Classification Sensor Defect.