- Faulty Power Window Regulator Master Switch Assembly
- Power Window Regulator Master Switch Assembly harness is open or shorted
- Power Window Regulator Master Switch Assembly circuit poor electrical connection
- Faulty Body ECU
- Engine Light ON (or Service Engine Soon Warning Light)
B1241 DescriptionThe Diagnostic Trouble Code (DTC) B1241 code notifies how the door control switches on the master switch assembly and passenger side door work. If this DTC is not output when one of the switches is operated, switch contact is faulty. If this DTC is output
when neither switch is operated, one of the switches is in the lock/unlock position (ON) or stuck. When a malfunction is detected in these switches, inspect each switch. Then, replace the malfunctioning switch if necessary. If no malfunction is detected in these switches, check the wire harness and body ECU.
B1241 Information for specific makes
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