The check fuel cap warning light is built into the instrument cluster.
If the PCM detects that the fuel cap is open, the light illuminates to warn the driver that the fuel cap is open.
Built into the instrument cluster.(See INSTRUMENT CLUSTER.)
The illumination condition of the check fuel cap warning light is as follows:
Check fuel cap warning light illumination condition
DTC P0457:00 is stored (PCM detects that fuel cap is open)
The PCM sends a check fuel cap warning light illumination request to the instrument cluster via CAN communication.