B295B Code: Meaning, Causes, and Symptoms | OBD2 Codes

B295B – Left Blend Door Potentiometer Feedback Short to Ground

 

B295B Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B295B Possible Causes

 

Faulty Left Blend Door Actuator,Left Blend Door Actuator harness is open or shorted,Left Blend Door Actuator circuit poor electrical connection,Faulty Electronic Manual Temperature Control (EMTC) or Electronic Automatic Temperature Control (EATC)

 

B295B Description

 

Under normal operation, to rotate the blend door actuator, the Electronic Manual Temperature Control (EMTC) or Electronic Automatic Temperature Control (EATC) module supplies voltage to the actuator motors through the door actuator clockwise circuits, and supplies ground through the door actuator counterclockwise circuits. To reverse the actuator rotation, the EMTC module or EATC module reverses the voltage and ground circuits. The actuator feedback resistors are supplied a ground from the EMTC module or EATC module by the door actuator return circuits and a 5-volt reference voltage on the door actuator reference circuits. The EMTC module or EATC module reads the voltage on the blend door actuator feedback circuits to determine the door actuator position, by the position of the actuator feedback resistor wiper arm.