P249D Fault Code

P249D NOx Catalyst: Feedback Control (Saturated Low Monitor)

Component / System

NOx Catalyst - Feedback Control (Saturated Low Monitor)

Monitor Strategy Description

Evaluates the time spent in Saturation Low Mode

Fault Limit

Time spent saturated low > 240 seconds

Enable Conditions

Engine Speed > 500 RPM
Ambient Air Temperature -8 - 55 °C
Barometric Pressure 75 - 105 kPa
Coolant Temperature > 65 °C

Disable Conditions

N/A

Time Required For P249D DTC To Be Set

300 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.