Test G: The Check Fuel Cap Indicator Is Never On

PINPOINT TEST G: THE CHECK FUEL CAP INDICATOR IS NEVER ON

G1-G2:

G3:

Normal Operation
The PCM monitors the fuel tank evaporative system for significant leaks that occur following refueling of the vehicle. If a fuel tank pressure change greater than 23.7 kPa (7 in-Hg) of vacuum within 30 seconds after refueling has occurred, or there is an excessive purge (fuel vapor) flow greater than 454 g (0.06 lb) per minute, the PCM sets DTC P0457 and sends a message to the instrument cluster over the CAN circuits to turn on the check fuel indicator.

Possible Causes
- PCM
- instrument cluster