P20EE Fault Code

P20EE NOx Catalyst: Conversion Efficiency

Component / System

NOx Catalyst - Conversion Efficiency

Monitor Strategy Description

Low NOx conversion efficiency

Fault Limit

Calculated NOx conversion efficiency DOC temperature rate of change < 66%

Enable Conditions

Engine Speed 1400 - 1800 RPM
Exhaust Mass Flow > 0.33 kg/s
System Out NOx Flow > 0.05 g/s
Inlet SCR Temperature 250 - 500 °C
Average SCR Temperature 250 - 500 °C
Outlet SCR Temperature 250 - 500 °C
Ambient Air Temperature -8 - 55 °C
Barometric Pressure 75 - 105 kPa
Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:
P2201, P229F, P242B, P0421, P0402, P0401, P225C, P225E

Time Required For P20EE DTC To Be Set

30 seconds

MIL Illumination

2 Drive Cycles

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Don't forget ! When a fault code pops up, Volvo's Uptime Center is automatically notified via an cellular link, and it alerts the truck's owner by prearranged methods, usually email or phone calls.