Possible causes – Exhaust Gas Recirculation Valve harness is open or shorted– Exhaust Gas Recirculation Valve circuit poor electrical connection– Faulty Exhaust Gas Recirculation Valve– Exhaust Gas Recirculation Valve clogged– Exhaust gas leaks Tech description EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. Before replacing any parts try cleaning…