Check Fuel Cap

The CHECK FUEL CAP display, located in the left message center display, is used to indicate significant leaks in the evaporative emissions system due to a loose, missing or defective fuel cap, or other fuel evaporative concern. The fuel tank pressure is monitored by the powertrain control module (PCM). If a leak is detected, the PCM signals a fault to the instrument cluster through the SCP network. Once the PCM has detected a major leak and the CHECK FUEL CAP indicator is illuminated, the CHECK FUEL CAP indicator will remain illuminated until the fuel cap has been secured and the vehicle has been operated for several minutes. For additional information, refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE .