P2201 Fault Code

Inlet NOx Sensor

Component / System

NOx Sensor #1 - Plausibilty

Monitor Strategy Description

Sensor Rationality Check

Fault Limit

Delta = Engine modeled NOx flow - NOx sensor based NOx flow < -20%

Enable Conditions

Engine Speed 1120 - 1620 RPM
Modeled NOx Fllow > 0.15 g/s
Engine Torque 1300 - 2000 Nm
Ambient Air Temperature -7 - 40 °C
Barometric Pressure 75 - 105 kPa
Coolant Temperature > 70 °C
Engine Speed Stability -10 to 10 RPM
Torque Stability -15 to 15 RPM
EGR Control Stability -1.5% to 1.5%

Disable Conditions

No Active DTC's:
P0401, P0402, P0400, P0402, P225D, P225F, P242A, P0421, P221A

Time Required For P2201 DTC To Be Set

3 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.