DTC Parameters

• EVAP vent solenoid is commanded off (open).
• EVAP purge solenoid is commanded to PWM (open).
• Fuel tank level is 15-85 percent.
• BARO more than 75 kPa.
• Throttle angle 10-35 percent.
• Vehicle speed less than 70 MPH.
• No ECT, fuel tank pressure, IAT, MAP, HO2S1, ECM internal fault, TP or VSS DTCs are set.

DTC sets when fuel pressure sensor voltage is more than 2.1 volts for more than 100 seconds during DTC diagnostic test, indicating a blocked vent system.