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Volvo engine code DTC P040B
EGR Temperature Sensor: Rationality Monitor This OBD monitor evaluates the rationality of the EGR temperature sensor. The monitor compares the EGR temperature with the coolant temperature during conditions where they should read the same temperature. P040B EGR Temperature Sensor: Rationality Monitor DTC P040B Component / System EGR Temperature Sensor - Rationality Monitor Strategy Description EGR Temperature Sensor evaluation Fault Limit Delta = EGR temperature - Coolant temperature < - 40 °C or > 80 °C Enable Conditions Stuck Low • Engine Speed 1000 - 1600 RPM • Engine Torque < 1200 Nm • EGR Mass Flow < 0.08 kg/s Stuck High • Engine Speed 1200 - 2000 RPM • EGR Mass Flow > 0.1 kg/s Disable Conditions No Active DTC's: • P040A, P040C Time Required For DTC To Be Set 30 seconds MIL Illumination 2 Drive Cycles