Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power Windows DTCS
; B1126 Driver's Power Window Motor A Pulse Malfunction; Driver's Power Window Motor B Pulse Malfunction DTC B1130; B1131 Front Passenger's Power Window Motor A Pulse Malfunction; Front Passenger's Power Window Motor B Pulse Malfunction DTC B1140 Driver's Power Window Position Detect Circuit Malfunction DTC B1141 Door Multiplex Control Unit Lost Communication with Front Passenger's Power Window Switch (UART line short) DTC B1142 Door Multiplex Control Unit Lost Communication with Front Passenger's Power Window Switch (UART line open) DTC B1143 Door Multiplex Control Unit Internal Error (EEPROM error) DTC B1145 Front Passenger's Power Window Position Detect Circuit Error DTC B1146 Front Passenger's Power Window Switch Malfunction
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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