The B1441 code on your 2021 Acura TLX indicates a fault in the front right (passenger) power window motor circuit. This code affects your TLX's power window system, signaling an electrical or mechanical problem preventing proper passenger window operation.
Understanding B1441 on Acura TLX
Code B1441 is the passenger side counterpart to B1440. The MICU (Multiplex Integrated Control Unit) monitors window motor circuits and sets this code when the passenger front window circuit shows abnormal operation or current draw.
Common Symptoms
- Passenger window inoperative
- Window operates slowly
- Window doesn't respond from driver master switch
- Window doesn't respond from passenger switch
- Motor runs but window doesn't move
- Grinding noise when operating
Primary Causes
- Window motor failure
- Window regulator broken
- Passenger door switch fault
- Master switch fault (window lock enabled)
- Wiring damage in door
- Door module issue
- Window glass off track
Diagnostic Procedure for 2021 Acura TLX
First, verify window lock button on driver door isn't enabled. Using Honda/Acura scan tool, access window motor data. Test from both driver master switch and passenger switch. Listen for motor operation. Check for power at motor connector. Inspect regulator mechanism. Check wiring between door and body.
Repair Solutions
Disable window lock if accidentally enabled. Replace failed window motor or motor/regulator assembly. Repair broken wiring in door jamb. Replace faulty passenger door switch. If master switch is the issue, replace it. Reinitialize window after repair for auto function. Clear codes and test operation from all switches.