Passenger Power Window Motor Circuit Malfunction
What does B1304 mean?
The B1304 code means the vehicle's onboard diagnostic system has detected: Passenger Power Window Motor Circuit Malfunction. This is a low severity code.
Common Symptoms
- Passenger window not operating
- Window moves slowly or stops mid-travel
- Grinding noise when using window switch
- Window does not respond from master switch or passenger switch
- Window glass dropped inside door
Probable Causes (Ranked by Likelihood)
- Failed passenger power window motor Very High
- Broken window regulator cable or track High
- Faulty passenger window switch Moderate
- Window lock-out switch engaged on driver door Moderate
- Blown fuse or damaged wiring Low
Step-by-Step Diagnostic Procedure
-
Check if window lock-out button is pressed on driver door
-
Test window operation from both master and passenger switches
-
Check power window fuse
-
Listen for motor noise when switch is activated
-
Inspect window regulator inside door panel
Frequently Asked Questions
Why does the passenger window not work from either switch?
If the window does not respond from the master switch or the passenger switch, the issue is likely the motor, regulator, or wiring rather than the switches themselves.
What is the window lock-out button?
The lock-out button on the driver door panel disables all passenger window switches. This is a safety feature to prevent children from operating the windows.
How do I temporarily secure a window that is stuck down?
You can temporarily secure the window using clear packing tape on the outside or a suction cup grip. Cover the window opening with a plastic bag until the repair is made.