DTC P0404: Exhaust Gas RECIRCULATION Open Position Performance: Description

Powertrain Control Module (PCM) monitors Exhaust Gas Recirculation (EGR) valve pintle position input to ensure valve responds properly to PCM commands. The PCM compares EGR position sensor with desired EGR position when valve is commanded open. If difference between EGR position sensor and desired EGR position is more than 20 percent, Diagnostic Trouble Code (DTC) P0404 will set.