WOMS
B code body Medium severity

B1419 Passenger Power Window Motor Circuit Open

The OBD2 code B1419 indicates that there is an open circuit in the passenger power window motor, meaning the motor is not receiving power or there is a break in the wiring

Definition

The OBD2 code B1419 indicates that there is an open circuit in the passenger power window motor, meaning the motor is not receiving power or there is a break in the wiring

Common causes

  • Faulty power window motor
  • Open circuit in wiring
  • Bad window switch
  • Blown fuse
  • Corroded or loose connectors
  • Faulty body control module (BCM)
  • Ground connection issues

Common misdiagnoses

  • Faulty window switch
  • Wiring issues or shorts
  • Defective body control module (BCM)
  • Malfunctioning power window relay
  • Issues with the door harness
  • Battery or charging system problems
  • Faulty power window motor

Troubleshooting steps

  1. 1. Check the Fuse

  2. 2. Locate the fuse box and check the fuse associated with the power windows. If the fuse is blown, replace it and see if the issue is resolved

  3. 3. Inspect Wiring and Connectors

  4. 4. Visually inspect the wiring and connectors leading to the passenger power window motor. Look for any signs of damage, such as frayed wires, corrosion, or loose connections

  5. 5. Test the Power Window Switch

  6. 6. Use a multimeter to test the power window switch for continuity. If the switch is faulty, it may not be sending the proper signal to the motor

  7. 7. Check the Power Window Motor

  8. 8. Test the power window motor directly by applying power to it from a known good source. If the motor does not operate, it may need to be replaced

  9. 9. Inspect the Window Regulator

  10. 10. If the motor is functioning but the window does not move, the window regulator may be faulty or jammed. Inspect the regulator for any mechanical issues

  11. 11. Check for Ground Issues

  12. 12. Ensure that the ground connection for the power window motor is secure and free of corrosion. A poor ground can cause an open circuit

  13. 13. Scan for Additional Codes

  14. 14. Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

  15. 15. Test the Circuit

  16. 16. Use a multimeter to test the voltage at the motor connector while operating the window switch. If there is no voltage, trace the circuit back to find where the open is occurring

  17. 17. Inspect the Body Control Module (BCM)

  18. 18. In some vehicles, the BCM controls the power windows. If all other components check out, the BCM may be faulty and require testing or replacement

  19. 19. Consult Wiring Diagrams

  20. 20. Refer to the vehicle’s service manual for wiring diagrams to understand the circuit layout and identify potential problem areas. If you are not comfortable performing these steps or if the issue persists after troubleshooting, it may be best to consult a professional mechanic for further diagnosis and repair