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AutoCodes - Generic - B2266

B2266 Code - Left Side Blend Door Circuit Failure

- Code Popularity: 2,666 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2266?

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 Left Side Blend Door Actuator
  • Left Side Blend Door Actuator harness is open or shorted
  • Left Side Blend Door Actuator circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air-Conditioning (HVAC) Module
  • Faulty Electronic Manual Temperature Control (EMTC)
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How to Fix the DTC B2266?

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 B2266 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 B2266 Description

Under normal operation, to rotate the temperature blend door actuator, the HVAC module supplies voltage and ground to the temperature blend door actuators through the door actuator motor circuits. To reverse the temperature blend door actuator rotation, the Heating, Ventilation, and Air-Conditioning (HVAC) Module reverses the voltage and ground circuits.
The temperature blend door actuator feedback resistors are supplied a ground from the HVAC module by the temperature blend door actuator return circuits and a 5-volt reference voltage on the temperature blend door actuator reference circuits. The HVAC module reads the voltage on the temperature blend door actuator feedback circuits to determine the temperature blend door actuator position by the position of the actuator feedback resistor wiper arm.
During an actuator calibration cycle, the HVAC module drives the temperature blend door until the door reaches both internal stops in the HVAC case. If the temperature blend door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be from the expected outlets.
The Diagnostic Trouble Code (DTC) sets when the module senses no change in actuator feedback voltage when the actuator motor has been energized.

OBDII Code B2266 - Left Side Blend Door Circuit Failure - AutoCodes.com
B2266 Code - Left Side Blend Door Circuit Failure

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Code B2266 comments

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