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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (6.7L Diesel - DTCS - P1192 To P21C3 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P20EE-SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD - BANK 1 >> Code Description >> When Monitored:

When Monitored:

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. 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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