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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 717 (5.7L CNG - DTCS P0204 To P0606 - 2500 Hd) >> Diagnosis And Testing >> P0452-EVAP Pressure Switch Stuck Closed >> When Monitored

When Monitored

WARNING: This page is about a different car, the 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

After the ignition is switched off, and the PCM power down, with the ambient temperature between 4°C (39.2°F) and 40°C (104°F).