B11EB – Rear HVAC Temperature Control Input Circuit Short

B11EB Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B11EB Possible Causes

Faulty Rear HVAC Temperature Control,Rear HVAC Temperature Control harness is open or shorted,Rear HVAC Temperature Control circuit poor electrical connection,Faulty Heating, Ventilation, and Air-Conditioning (HVAC) Module

B11EB Description

Under normal operation, the rear auxiliary control is supplied a 5-volt reference and ground from the Heating, Ventilation, and Air-Conditioning (HVAC) Module. When the auxiliary blower motor speed, airflow mode or temperature control is adjusted, the HVAC module reads the voltage from the rear auxiliary climate controls on the auxiliary blower motor speed, airflow mode, and temperature control feedback circuits to determine the requested setting. The OBDII code sets when the HVAC module senses an open, or short to ground or voltage on the rear auxiliary climate controls blower speed input circuit.