B1407 – Driver Power Window Up Circuit Open

The ODBII code B1407 indicates that there is an open circuit in the driver power window up circuit, meaning the system is unable to detect the signal needed to raise the driver’s side window.

The severity of ODBII code B1407 is moderate.

Common Causes For: B1406 Driver Power Window Down Circuit Short To Ground

• Open circuit in the wiring
• Faulty power window switch
• Defective window motor
• Poor ground connection
• Blown fuse
• Corroded connectors
• Malfunctioning body control module (BCM)

Common misdiagnosis for B1407 Driver Power Window Up Circuit Open

• Faulty window switch
• Defective power window motor
• Wiring issues or shorts
• Malfunctioning body control module (BCM)
• Broken window regulator
• Battery or charging system problems
• Incorrectly installed or damaged door panel
• Faulty fuse or relay

Common Troubleshooting Steps

The OBD-II code B1407 indicates a problem with the driver power window up circuit, specifically that there is an open circuit. Here are some common troubleshooting steps to diagnose and potentially resolve this 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 persists.
• Inspect Wiring and Connectors:
• Visually inspect the wiring and connectors related to the driver power window circuit. Look for any signs of damage, corrosion, or loose connections. Pay special attention to the wiring harness in the door, as it can be prone to wear and tear.
• Test the Power Window Switch:
• Use a multimeter to test the power window switch for continuity. If the switch is faulty, it may need to be replaced.
• Check the Window Motor:
• Test the power window motor by applying direct battery voltage to it. If the motor does not operate, it may be defective and require replacement.
• Inspect the Window Regulator:
• Check the window regulator for any mechanical issues that may prevent the window from moving. If the regulator is damaged, it may need to be replaced.
• 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.
• Check Ground Connections:
• Ensure that all ground connections related to the power window circuit are secure and free of corrosion. A poor ground can cause circuit issues.
• Test the Body Control Module (BCM):
• If all other components check out, the issue may lie with the BCM. Testing or reprogramming the BCM may be necessary, but this should be done by a professional.
• Consult Wiring Diagrams:
• Refer to the vehicle’s wiring diagrams to trace the circuit and identify any other components that may be involved in the power window operation.
• Perform a Visual Inspection:
• Look for any signs of water intrusion or other environmental factors that could affect the electrical components. 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.