![]() P0457 - Loose Fuel Cap / Gross Leak Detected: This code is set if the PCM recognizes a leak greater than. If the ESIM switch does not close within a calibrated time, the PCM calculates a small leak of 0.02". P0456 - EVAP Purge System Small Leak: When the ignition is turned OFF and the EVAP system is sealed, a change in the fuel tank vapor temperature/ pressure occurs. The test is designed to discover a leak of 0.090" or greater. P0455 - EVAP Purge System Large Leak: This code is set id the PCM detects that the ESIM switch changes from closed to open following the purge shutdown sealing period. P0452 - EVAP Pressure Switch Stuck Closed: This code is set if the PCM does not detect an open ESIM switch following purge solenoid energizing. ![]() P0441 - EVAP Purge System Performance: This code is set if the PCM detects that the purge flow ratio and the ESIM switch closed ratio are below pre-set calculations. P0440 - General EVAP System Failure: This code is set if the PCM detects the EVAP system is not achieving or maintaining vacuum during the monitor test period. 6.5L Diesel Fuel Injection Pump (2002-94).Manifold Absolute Presure (MAP) Sensors.Air Charge / Manifold Temperature Sensors.Gasoline Direct Injection (GDI) Fuel Injector.
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