WOMS
B code body Medium severity

B2426 Passenger Solar Radiation Sensor Circuit Open

The OBD2 code B2426 indicates that there is an open circuit in the passenger solar radiation sensor, which measures sunlight intensity to help control climate settings in the vehicle

Definition

The OBD2 code B2426 indicates that there is an open circuit in the passenger solar radiation sensor, which measures sunlight intensity to help control climate settings in the vehicle

Common causes

  • Faulty passenger solar radiation sensor
  • Damaged wiring or connectors in the sensor circuit
  • Corrosion or poor connections at the sensor or connector
  • Open circuit due to a break in the wiring
  • Malfunctioning climate control module
  • Software issues or calibration errors in the vehicle's system

Common misdiagnoses

  • Faulty climate control module
  • Malfunctioning ambient light sensor
  • Wiring issues or shorts in the harness
  • Defective passenger seat occupancy sensor
  • Incorrectly calibrated HVAC system
  • Faulty or misaligned windshield or sunroof sensors
  • Issues with the body control module (BCM)

Troubleshooting steps

  1. 1. Understand the Code

    B2426 refers to a problem with the solar radiation sensor, which is typically used in climate control systems to adjust the temperature based on sunlight exposure

  2. 2. Visual Inspection

    Check Wiring and Connectors: Inspect the wiring harness and connectors associated with the solar radiation sensor for any signs of damage, corrosion, or loose connections

  3. 3. Sensor Condition

    Examine the solar radiation sensor itself for physical damage or dirt that may affect its operation

  4. 4. Check Sensor Operation

    Test the Sensor: If possible, use a multimeter to check the resistance or voltage output of the solar radiation sensor. Compare the readings to the specifications in the vehicle’s service manual

  5. 5. Sensor Location

    Ensure the sensor is properly mounted and not obstructed by any objects that could affect its readings

  6. 6. Inspect Related Components

    Climate Control Module: Check the climate control module for any faults or issues that may affect the sensor's operation

  7. 7. Other Sensors

    Inspect other related sensors (like ambient temperature sensors) to ensure they are functioning correctly

  8. 8. Check for Short Circuits

    Continuity Testing: Use a multimeter to check for continuity in the wiring between the solar radiation sensor and the climate control module. Look for any breaks or shorts in the circuit

  9. 9. Scan for Additional Codes

    Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

  10. 10. Clear Codes and Test Drive

    Clear the Code: After performing the checks and repairs, clear the trouble code using an OBD-II scanner

  11. 11. Test Drive

    Take the vehicle for a test drive to see if the code reappears. Monitor the climate control system to ensure it operates correctly

  12. 12. Professional Diagnosis

    If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or automotive technician who has experience with your vehicle make and model.Conclusion By following these troubleshooting steps, you should be able to identify the cause of the B2426 code and take appropriate action to resolve the issue. Always ensure safety precautions are taken when working on vehicle electrical systems