B0228 CADILLAC - Recirculate Position Feedback Circuit
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Repair Difficulty Level:
Possible causes
Tech notes
DTC B0228 02 - Recirculate Position Feedback Circuit Short to GroundDTC B0228 05 - Recirculate Position Feedback Circuit Short to Battery or Open
DTC B0228 61 - Recirculate Position Circuit Actuator Stuck
Possible symptoms
B0228 Cadillac Description
The Heating, Ventilation, and Air Conditioning (HVAC) control module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of an electric motor and a potentiometer. The module supplies a low reference and 5-volt reference source voltage to the potentiometer. The HVAC control module monitors the voltage drop across the potentiometer on the door position signal circuit. When the actuator shaft rotates, the voltage on the door position signal circuit changes. The control circuit uses either a 0, 2.5 or 5-volt signal to command the actuator movement. When the actuator is at rest, the control circuit value is 2.5 volts. A 0 or 5-volt control signal commands the actuator movement in opposite directions.