See also:

Onboard Diagnostic System — OBD II
Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. ...

Loose Filler Cap Message
If the vehicles diagnostic system determines that the fuel filler cap in loose, improperly installed, or damaged, a “gASCAP” message will be displayed in the instrument cluster. Tighten the ...

Fuel Requirements
This engine is designed to meet all emissions regulations and provide excellent fuel economy and performance when using high-quality unleaded “regular” gasoline having an octane rating o ...