P0401 Fault Code
P0401 EGR System (Low Flow)
Component / System
EGR System - Low Flow
Monitor Strategy Description
Compare demanded EGR flow to actual
Fault Limit
Ratio = (Measured EGR mass flow Modeled EGR mass flow) < 0.55
Enable Conditions
Engine Speed 1300 - 1800 RPM
Engine Torque 625 - 2000 Nm
EGR Position 70 - 100 %
EGR Flow Demand 0.1 - 0.4 kg/s
Ambient Air Temperature -8 - 55 °C
Barometric Pressure 75 - 105 kPa
Coolant Temperature > 65 °C
Disable Conditions
No Active DTC's:
P0069, P046C, P0234, P0299
Time Required For P0401 DTC To Be Set
4 Seconds
MIL Illumination
2 Drive Cycles
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