Dodge Avenger: Onboard diagnostic system — OBD II - Maintaining your vehicle - Dodge Avenger Owners ManualDodge Avenger: Onboard diagnostic system — OBD II

Your vehicle is equipped with a sophisticated OnboardDiagnostic system called OBD II. This system monitorsthe performance of the emissions, engine, and automatictransmission control systems. When these systems areoperating properly, your vehicle will provide excellentperformance and fuel economy, as well as maintainingengine emissions well within current government regulations.

If any of these systems require service, the OBD II systemwill turn on the Malfunction Indicator Light (MIL). It willalso store diagnostic codes and other information toassist an authorized service technician in making repairs.

Although your vehicle will usually be drivable and notneed towing, see your authorized dealer for service assoon as possible.

CAUTION:

• Prolonged driving with the “Malfunction IndicatorLight” on could cause further damage to theemission control system. It could also affect fueleconomy and driveability. The vehicle must beserviced before any emissions tests can be performed.

• If the “Malfunction Indicator Light” is flashingwhile the engine is running, severe catalytic converterdamage and power loss will soon occur.

Immediate service is required.

Loose Fuel Filler Cap Message

After fuel is added, the vehicle diagnostic system candetermine if the fuel filler cap is possibly loose orimproperly installed. A “GASCAP” message will bedisplayed in the instrument cluster. Tighten the gas capuntil a clicking sound is heard. This is an indication that/the gas cap is properly tightened. Press the trip odometer“Reset” button to turn off the message. If the problempersists, the message will appear the next time thevehicle is started. This might indicate a damaged cap. Ifthe problem is detected twice in a row, the system willturn on the “Malfunction Indicator Light (MIL).” Resolvingthe problem will turn the MIL light off.

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