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 pins.
The cost to diagnose the B2785 Scion code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The Certification ECU (Smart Key ECU Assembly) intermittently monitors the Local Interconnect Network (LIN) communication bus between the components related to certification. The Diagnostic Trouble Code (DTC) B2785 is stored when a malfunction in the LIN communication bus between the components related to certification is detected 3 times consecutively.
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