DTC P0403: EGR Solenoid Control Circuit: Description

Powertrain Control Module (PCM) monitors Exhaust Gas Recirculation (EGR) valve pintle position input to ensure that valve responds properly to commands from PCM. Linear EGR valve is controlled by using an ignition positive driver and ground circuit within PCM. Driver has ability to detect an electrical malfunction in ignition positive or ground circuit. If an electrical malfunction occurs, driver signals PCM to set this DTC.