DTC Set Criteria

DTC will set under following conditions: Less than 16 minutes have passed since engine started. Engine coolant temperature was less than 86°F (30°C) when engine started and more than 140°F (60°C) when monitor begins. Intake air temperature was 86°F (30°C) or less when engine started. Engine speed is more than 1600 RPM. Power steering pressure switch is off. Barometric pressure is more than 11 psi (76 kPa). Volumetric efficiency is 25-80 percent. Vehicle speed is 19 MPH or more. Monitor runs 75-125 seconds depending on fuel level and fuel tank temperature. Code will set if internal pressure of fuel tank changes less than .047 psi. (.324 kPa) in 20 seconds after purge solenoid is driven when fuel tank and vapor lines are closed.