Rear Passenger Side Power Window Circuit Malfunction
What does B1306 mean?
The B1306 code means the vehicle's onboard diagnostic system has detected: Rear Passenger Side Power Window Circuit Malfunction. This is a low severity code.
Common Symptoms
- Rear right window inoperative
- Window stuck open or closed
- No response from window switch
- Slow window operation
- Grinding noise from rear right door
Probable Causes (Ranked by Likelihood)
- Failed rear right window motor Very High
- Broken window regulator assembly High
- Faulty rear right window switch Moderate
- Door jamb wiring damage Moderate
- BCM output circuit failure Low
Step-by-Step Diagnostic Procedure
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Verify window lock-out is not engaged
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Test from master switch and local switch
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Check fuse for rear windows
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Apply direct power to motor at connector
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Inspect door jamb wiring harness
Frequently Asked Questions
Can children break the window motor?
Excessive use of the window switch -- cycling the window up and down repeatedly -- can overheat and prematurely wear out the window motor.
How do I know if it is the motor or regulator?
If you hear the motor running but the window does not move, the regulator is likely broken. If there is no sound at all, the motor, switch, or wiring is the issue.
Is there a temporary fix?
If the window is stuck down, you may be able to hold the up switch while someone helps push the glass up from outside. This is only a temporary measure until proper repair.