DTC Set Conditions

Check Conditions - At least 20 seconds have passed since the last monitor was complete. Engine coolant temperature is higher than 169°F (76°C). Engine speed is between 1000-2000 (M/T) or 940-2000 (A/T) RPM. Intake air temperature is higher than 32°F (0°C). Barometric pressure is higher than 11 psi (76 kPa). Vehicle speed is 0.9 MPH (1.5 KM/H - M/T) or 18.7 MPH (30 KM/H - A/T) or more. At least 90 seconds have passed since manifold differential pressure sensor output voltage fluctuated 1.5 volts or more. The throttle valve is closed. Volumetric efficiency is lower than 15% (M/T) or 24% (A/T). While fuel is being shut off (M/T). The ECM (M/T) or PCM (A/T) monitors for this condition for 3 cycles of 2 seconds each during the drive cycle.
Judgement Criteria - When intake manifold pressure fluctuation width is lower than 0.38 psi (2.6 kPa). When the EGR solenoid is turned ON.