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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (3.7L/4.7L/5.7L - DTCS P0197 To P0503 - NGC - 1500 & 2500) >> Diagnosis And Testing >> P0440-General EVAP System Failure >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Monitor (PCM) detected that the EVAP system was unable to achieve or maintain vacuum during the test period or the system was not able to close the ESIM switch when vacuum was present.

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