DTC P2413: Exhaust Gas Recirculation (EGR) System Malfunction: General Description

The exhaust gas recirculation (EGR) valve, which is controlled by the engine control module (ECM)/powertrain control module (PCM), is opened and the exhaust gas flows through the EGR valve, the intake manifold, and the EGR passage. The exhaust gas is circulated into the air/fuel mixture and the mixture is drawn into the combustion chamber to lower combustion temperatures, thus reducing oxides of nitrogen (NOx) emissions. A sensor (lift sensor) is built into the EGR valve and detects the amount of valve lift. The command value for the target valve lift is stored in the ECM/PCM so that exhaust gas recirculation can be optimized according to driving conditions. Comparing this command value with the lift sensor output signal value, the ECM/PCM controls the EGR valve to make the amount of actual valve lift equal to the command value. If the valve sensor output is insufficient for the commanded valve lift, the ECM/PCM detects a malfunction and stores a DTC.