DTC Set Criteria

There are 3 monitors, 2 seconds each, during each drive cycle. At least 20 seconds have passed since last monitor was complete. Engine coolant temperature is more than 176°F (80°C). Engine speed is 910-1650 RPM. Intake air temperature is more than 41°F (5°C). Barometric pressure is more than 11 psi (76 kPa). Vehicle speed is 18.7 MPH or more. At least 90 seconds have passed since manifold differential pressure sensor output voltage changed 1.5 volts or more. Throttle valve is closed. Volumetric efficiency is less than 28 percent. Code will be set if pressure fluctuations are minimal when EGR solenoid is turned on.