DTC Parameters

• EVAP purge solenoid is commanded to a 20 percent duty cycle.
• EVAP vent solenoid is commanded ON.
• Engine is at idle.
• Vehicle speed is zero MPH.
• Engine load is less than 35 percent.
• MAP is more than 40 kPa.
• Battery voltage is more than 11 volts.
• ECT at start-up is 46-167°F (8-75°C).
• IAT is 46-122°F (8-50°C).
• Long term fuel cells are not cleared (if cleared, engine must run longer than 16 minutes 45 seconds.
• Fuel level is 1.6-12.7 gallons.
• No ECT, EVAP purge solenoid, EVAP vent solenoid, fuel tank pressure, idle speed, HO2S, throttle actuator, TP sensor or vehicle speed DTCs have been set.

DTC will set if fuel tank pressure cannot be pulled lower than 2.02 volts (-2.41 in. H2O) during phase "D" of the EVAP diagnostic system test indicating a large EVAP leak. Condition exists for 15 seconds or no change is detected for 4 seconds.