Left Side Blend Door Circuit Failure
Table of contents
B2266 LINCOLN Possible 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)
How do I fix code B2266 LINCOLN?
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.
Cost of diagnosing the B2266 LINCOLN code
The cost of diagnosing the B2266 LINCOLN 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.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B2266 LINCOLN 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.