P04D9 Fault Code

P04D9 EGR System: Feedback Control (Saturated Low)

Component / System

EGR System - Feedback Control

Monitor Strategy Description

Saturated low: Difference between demanded and calculated burned air fraction

Fault Limit

Ratio = Time spent saturated low total time > 0.9

Enable Conditions

Engine Torque 300 - 2500 Nm
Exhaust Mass Flow 0.1 - 1.0 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, P0401, P0402

Time Required For P04D9 DTC To Be Set

90 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.