Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The cost of diagnosing the B1781 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
The Body Control Module (BCM) monitors the Mirror Driver Down Motor. The BCM sets the OBDII code when the Mirror Driver Down Motor is not to factory specifications.
Need more information on how to fix the B1781 code? Get Access to Factory Service Manuals
Get the B1781 code diagnosed by a professional: Find a repair shop in your area
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