What Does B1407 Mean?
This code indicates the Body Control Module (BCM) has detected an open circuit in the driver's power window up control circuit. An open circuit means there is a break in the electrical path preventing current flow when the window up function is commanded. This affects the driver's door power window system and prevents the window from being raised using the switch.
Common Causes
40%
Broken or corroded wiring between the driver's door switch and BCM, often damaged in the door hinge area due to repeated flexing
30%
Failed driver's door window switch with internal open circuit in the up position contacts
20%
Corroded or loose connector terminals at the BCM, door module, or switch connector causing intermittent or permanent open circuit
10%
Failed Body Control Module with internal circuit fault or damaged door control module
Diagnostic Steps
1
Step 1: Perform visual inspection of the driver's door wiring harness, especially in the door jamb area between the door and body. Look for pinched, broken, or frayed wires. Check all connectors for corrosion, pushed-back pins, or moisture intrusion.
2
Step 2: Using a multimeter, backprobe the driver's window switch connector and check for continuity in the window up circuit when the switch is pressed. Compare readings to the down circuit and passenger window circuits to identify switch failure.
3
Step 3: Test for voltage supply and ground at the window switch with ignition on. Verify battery voltage on the power feed wire and proper ground. Then measure resistance on the signal wire from the switch back to the BCM connector (should show open circuit when switch is not pressed, low resistance path when pressed up).
4
Step 4: Check continuity of the window up signal wire from the door switch through the door jamb harness to the BCM connector with the connector disconnected. Wiggle the door open and closed while testing to identify intermittent breaks in the door jamb area.
5
Step 5: If all wiring and switch test good, inspect BCM connector terminals for corrosion or damage. Test BCM by checking for proper voltage output on the window motor feed wire when commanding window up function through scan tool active tests if available.
6
Step 6: After repairs, clear codes, cycle the window switch through all positions multiple times, and verify code does not return. Perform window relearn procedure if required by manufacturer.
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an open circuit in the driver's power window up control circuit. An open circuit means there is a break in the electrical path preventing current flow when the window up function is commanded. This affects the driver's door power window ...
The most common cause of B1407 (Driver Power Window Up Circuit Open) is: Broken or corroded wiring between the driver's door switch and BCM, often damaged in the door hinge area due to repeated flexing
Typical repair costs for B1407 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this is a convenience feature failure. Repair at your convenience, though it may affect ability to secure the vehicle or communicate through the window in inclement weather.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1407 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Body Electrical System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
