DTC : P049D (2018 2019 2020 2021): General Description
The powertrain control module (PCM) controls the exhaust gas recirculation (EGR) valve opening. The system includes the EGR actuator, the EGR valve, the EGR valve position sensor, and the PCM. The EGR valve position sensor is a semiconductor type, and it is attached to the EGR valve and shaft to determine EGR valve position. The EGR valve position signal from the EGR valve position sensor is transmitted to the PCM for target position feedback control. The PCM transmits a signal to the throttle actuator and moves the EGR valve to the fully closed position to register the EGR valve fully closed position when the vehicle is turned to the ON mode or during EGR operation is not in progress. If the registration of the throttle valve fully closed position does not complete within a predetermined time or the registered value is out of predetermined range, the PCM detects a malfunction in the EGR system and stores a DTC.