EGR Valve Position Sensor
The Exhaust Gas Recirculation (EGR) system is used to reduce the amount of nitrogen oxide (NOx) emission levels caused by combustion temperatures exceeding 816°C (1,500°F). It does this by introducing small amounts of exhaust gas back into the combustion chamber. The exhaust gas absorbs a portion of the thermal energy produced by the combustion process and thus decreases combustion temperature.
The Engine Control Module (ECM) monitors the position of the EGR valve pintle via the EGR position sensor. If the ECM detects a calibrated variance between the desired EGR valve pintle position and actual position for a calibrated amount of time, a DTC will set.Removal & Installation
- Remove the exhaust gas recirculation (EGR) pipe.
- Disconnect the EGR valve electrical connector.
- Remove the EGR valve bolts.
- Remove the EGR valve.
- Remove the EGR valve gasket.
- Clean the EGR valve mating surface.
- Install the EGR valve with a new gasket to the intake manifold.
- Install the EGR valve bolts.
- Tighten the bolts to 22 ft. lbs. (30 Nm).
- Connect the EGR valve electrical connector.
- Install the EGR pipe.