The factory exhaust gas pressure sensor is used by the ECM to for readings to control actuation of the turbo. This sensor receives its readings from a small stainless-steel tube that is connected to the exhaust manifold. In some cases, the tube and sensor can become plugged with soot causing the reading to be off or even fail completely. Replace this sensor with a genuine Cummins Replacement Exhaust Gas Pressure Sensor. This sensor will restore your trucks performance and get you back on the road.