Volvo All Engines (2010 Emissions) Fault Code: SPN 3250 FMI 2 PID: DPF Spark Assisted Flame Temperature Sensor

This diagnostic trouble code (DTC) indicates malfunction at the aftertreatment diesel particulate filter (DPF) flame temperature sensor. This aftertreatment DPF flame temperature sensor is used to measure engine exhaust gas temperature (EGT) within the flame region of the aftertreatment DPF during aftertreatment DPF regeneration. The aftertreatment control module (ACM) monitors this temperature to detect the existence of the flame. Diagnostic trouble codes (DTCs) may result if the system is unable to light the flame or if there are multiple flame losses. Aftertreamemt DPF regeneration will be prevented until the system is sufficiently warmed-up for the specified duration.

Conditions for diagnostic trouble code (DTC):
1) **Flame Temperature Sensor is not within expected range**

Observable symptoms
1) Regeneration aborted

Probable cause
1 )Flame temperature sensor
2) Exhaust system leakage
3) Exhaust Gas Temperature (EGT) Sensor
4) Basic checks
5) The recommendation is to perform the following checks before any further fault tracing is performed