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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (6.7L Diesel - DTCS P205E To P245D - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P20EE-SCR NOX Catalyst Efficiency Below Threshold - Bank 1 >> When Monitored

When Monitored

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

This monitor has to meet specific engine and aftertreatment conditions to run and complete. NOx sensor data is gathered over varying engine speeds and loads. When enough data has been gathered, the diagnostic will run, make a pass/fail decision, and begin to gather data again.

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