Volvo All Engines (2010 Emissions) Fault Code: SPN 5298 FMI 2 PID: PSID 99 Aftertreatment DOC Conversion Efficiency

This diagnostic function evaluates if the catalyst is converting the fuel from the aftertreatment hydrocarbon doser into enough heat at the beginning of the aftertreatment diesel particulate filter (DPF) regeneration. The aftertreatment DPF intake temperature sensor (post catalyst) should steadily increase and stabilize once the desired temperatures are met.

Conditions for diagnostic trouble code (DTC):
1) Catalyst outlet temperature reaction time too low to support hydrocarbon conversion

Observable symptoms
1) None

Probable cause
1) Exhaust Gas Temperature (EGT) Sensor
2) Catalyst failure