LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Engine Controls - DTCS P0330 To P0480) >> Diagnosis And Testing >> P0457-Loose Fuel Cap >> Theory Of Operation >> Notes

Theory Of Operation: Notes

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

The PCM records the fuel level when the ignition key is turned off and then again when the ignition key is turn back on. This is done to monitor for fuel level increase. If a fuel level increase is detected and the EVAP Leak monitor is run and fails, the Loose Gas Cap DTC will set and the GAS CAP indicator will displayed in odometer to inform the vehicle operator that the cap is off of loose.

scientia non olet · About LEMON Manuals