Fuel Cap Warning Message

The PCM will detect a loose or missing fuel fill cap as an evaporative system leak, and alerts the driver by showing a warning message in the gauge display.

The first time a leak is detected, a TIGHTEN FUEL CAP (multi-information display model) (CHECK FUEL CAP (odometer/outside temperature display model)) message appears in the gauge display (A). To scroll to another message, press the select/reset button. The TIGHTEN FUEL CAP/CHECK FUEL CAP message appears each time you restart the engine until the system turns the message off. Turn the engine off, then replace or tighten the fuel fill cap until clicks at least once.

Multi-information display model 

Fig 1: Identifying Multi-Information Display Model Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Odometer/outside temperature display model 

Fig 2: Identifying Odometer/Outside Temperature Display Model Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.