The OBD code B1490 for Hyundai indicates an issue with the Occupant Classification (OC) system.
Symptoms include the Air Bag Warning Light being ON.
The cause could be a faulty OC Module or related wiring issues.
This is a serious safety concern.
To fix, inspect the OC Module, wiring harness, and connectors for any damage or poor connections.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Hyundai b1490 OBD Code
The vehicle displays an airbag warning light on the dashboard.
- Symptoms: Air Bag Warning Light ON
Causes of the Hyundai b1490 OBD Code
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Possible reasons for Hyundai fault code B1490 include issues with the immobilizer system or key fob.
- B1490 can be caused by a faulty Occupant Classification (OC) Module.
- An Occupant Classification (OC) Module harness that is open or shorted.
- An Occupant Classification (OC) Module circuit with poor electrical connection.
- A faulty Supplemental Restraints System Control Module (SRSCM).
Fixing Hyundai Error Code b1490 Step By Step
To address Hyundai fault code B1490, inspect and repair the driver’s airbag module.
- To fix Hyundai OBDII code B1490, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the airbag system.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no visible issues are found, perform a diagnostic scan tool test to pinpoint the exact cause of the fault.
- Based on the scan results, replace any faulty components such as the airbag control module if necessary.
- Clear the fault codes from the system memory using the diagnostic tool.
- Finally, perform a road test to ensure the issue has been resolved.
Cost Of Fixing Hyundai b1490 Fault Code
Diagnosing and repairing Hyundai fault code B1490 may involve replacing the occupant classification system module.
The cost to diagnose and fix Hyundai OBD code B1490 is based on an estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost will depend on the shop’s rates and the complexity of the repair.
Details of the Hyundai b1490 OBD Code
Hyundai fault code B1490 relates to the immobilizer system malfunction.
Hyundai OBD code B1490 means Immobilizer Key not Matched.
This code is triggered by the immobilizer system when the key being used to start the vehicle does not match the programmed key data stored in the immobilizer module.
The immobilizer system is involved in this case, which is designed to prevent unauthorized starting of the vehicle.
When the key is not recognized, the system will prevent the engine from starting to deter theft.
Mechanic’s Tech Notes
For Hyundai fault code B1490, check the driver’s door key switch for potential issues.
OBDII code B1490 in a Hyundai may indicate a communication issue with the Transmission Control Module (TCM).
To diagnose, check TCM power and ground using a multimeter.
Verify TCM response over the Controller Area Network (CAN) network with a scan tool.
Visually inspect wiring harnesses and connectors for damage, and check connector pins for issues like being broken, bent, pushed out, or corroded.
Reflashing the TCM may be necessary to resolve the problem.
FAQ
OBD code B1490 in a Hyundai indicates an issue with the Occupant Classification (OC) Module. Check wiring harness, connectors, and components for faults.
Common symptoms for Hyundai OBD code B1490 include Air Bag Warning Light ON. Causes may be faulty Occupant Classification Module or related wiring issues. Fix: Inspect and repair wiring connections.
Diagnose OBD code B1490 in Hyundai: Symptoms Air Bag Warning Light ON. Causes Faulty OC Module, harness issues. Fix Inspect wiring, connectors for damage or corrosion.
Wrap Up
If your Hyundai is displaying OBD code b1490 and you’re experiencing issues with the airbag system, it could be caused by a faulty airbag control module or a problem with the wiring harness connecting to the module.
To address Hyundai OBD code b1490, start by inspecting the wiring harness for any visible damage or loose connections.
Test the connectors for proper continuity and secure them if needed.
If the issue persists, consider replacing the airbag control module after verifying all connections are secure.
