Code Enable Criteria

• 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.
• ECT and IAT between 39-86°F (4-30°C) at engine start-up.
• ECT and IAT are within 14°F (8°C) of each other.
• Throttle angle 10-35 percent.
• Vehicle speed less than 70 MPH.
• No ECT, fuel tank pressure, IAT, MAP, O2S1, PCM internal fault, TP or VSS DTCs are set.

DTC sets when fuel pressure sensor voltage is less than 0.7 volt for more than 100 seconds during DTC diagnostic test, indicating a blocked vent system.