LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1287 (Instrument Cluster) >> Diagnosis And Testing >> Instrument Cluster >> Pinpoint Test X: The Check Fuel Cap Indicator Is Never/Always On >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

The powertrain control module (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 a -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 communication network to turn on the check fuel cap indicator.

scientia non olet · About LEMON Manuals