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AutoCodes - Generic - B1266

B1266 Code - Instrument Panel System Communication Bus Malfunction Short To Battery

- Code Popularity: 17,916 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1266?

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 Engine Control Module (ECM)
  • Faulty Multi Display ECU
  • Faulty A/C ECU
  • Faulty Combination Meter ECU
  • The harness is open or shorted between ECU
  • ECU circuit poor electrical connection
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How to Fix the DTC B1266?

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 B1266 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 B1266 Description

This Diagnostic Trouble Code (DTC) is output when +B (Battery) or GND (Ground) short occurs on instrument panel system communication bus (Engine Control Module, Multi Display, A/C ECU and Combination Meter ECU). If +B or GND short is detected on instrument panel system communication bus, separate it by bus cut relay in body ECU to prevent while communication buses failure.

OBDII Code B1266 - Instrument Panel System Communication Bus Malfunction Short To Battery - AutoCodes.com
B1266 Code - Instrument Panel System Communication Bus Malfunction Short To Battery

Need More Information on the Code?

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Information for Specific Makes

  • B1266 Lexus Instrument Panel System Communication Bus Malfunction Short To Battery
  • B1266 Scion Instrument Panel System Communication Bus Malfunction Short To Battery
  • B1266 Toyota Instrument Panel System Communication Bus Malfunction Short To Battery

Need Help with the Code?

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Code B1266 comments

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