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B2785 Scion Code - Communication Malfunction Between ECUs Connected by LIN

- Code Popularity: 4,332 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2785 Scion?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Certification ECU (Smart Key ECU Assembly)
  • Certification ECU harness is open or shorted
  • Certification ECU circuit poor electrical connection
  • Faulty Steering Lock ECU (Steering Lock Actuator Assembly)
⚠ Does your Scion have Safety Recalls? → Check here

How to Fix the DTC B2785 Scion?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2785 Scion code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B2785 Scion Description

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.

OBDII Code B2785 Scion - Communication Malfunction Between ECUs Connected by LIN - AutoCodes.com
B2785 Scion Code - Communication Malfunction Between ECUs Connected by LIN

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Code B2785 Scion comments

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