B1419 – Passenger Power Window Motor Circuit Open

The ODBII 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.

The severity of ODBII code B1419 is generally considered moderate.

Common Causes For: B1418 Passenger Power Window Motor Circuit Failure

• 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 misdiagnosis for B1419 Passenger Power Window Motor Circuit Open

• 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

Common Troubleshooting Steps

The OBD-II code B1419 indicates a problem with the passenger power window motor circuit, specifically that there is an “open” in the circuit. This means that the circuit is not completing properly, which can prevent the power window from functioning. Here are some common troubleshooting steps to diagnose and potentially resolve the issue:

• Check the Fuse:
• 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.
• Inspect Wiring and Connectors:
• 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.
• Test the Power Window Switch:
• 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.
• Check the Power Window Motor:
• 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.
• Inspect the Window Regulator:
• 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.
• Check for Ground Issues:
• Ensure that the ground connection for the power window motor is secure and free of corrosion. A poor ground can cause an open circuit.
• Scan for Additional Codes:
• Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Test the Circuit:
• 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.
• Inspect the Body Control Module (BCM):
• 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.
• Consult Wiring Diagrams:
• 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.