B1270 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1270 – Servo Motor Potentiometer Defrost Circuit Short To Battery

 

B1270 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1270 Possible Causes

 

Faulty Servo Motor Potentiometer Defrost,Servo Motor Potentiometer Defrost harness is open or shorted,Servo Motor Potentiometer Defrost circuit poor electrical connection,Faulty Heating, Ventilation, and Air Conditioning (HVAC) Module

 

B1270 Description

 

The Heating, Ventilation, and Air Conditioning (HVAC) Module monitors the Servo Motor Potentiometer Defrost. The HVAC Module sets the OBDII code when the Servo Motor Potentiometer Defrost is not to factory specifications.