The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment DPF. This is done by making a check for deviation between sensor value and a model pressure drop. In some extreme cases the engine will derate. Conditions for diagnostic trouble code (DTC):1) High differential pressure across the filter (DPF) Probable cause1) Aftertreatment DPF Differential Pressure Sensor2) Aftertreatment Diesel Particulate Filter (DPF) Volvo All Engines (2010 Emissions) Fault Code: SPN 3720 FMI 0 PID: PPID 337 Aftertreatment DPF Ash Load Percent Volvo All Engines (2010 Emissions) Fault Code: SPN 3695...

The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment DPF. This is done by making a check for deviation between sensor value and a model pressure drop. In some extreme cases the engine will derate. Conditions for diagnostic trouble code (DTC):1) DPF Differential pressure too low Observable symptoms1) None Probable cause1) DPF Sensor lines connected incorrectly2) Differential pressure sensor lines plugged or damaged3) Aftertreatment DPF Differential Pressure Sensor4) Aftertreatment Diesel Particulate Filter (DPF)5) Exhaust leakage prior to the aftertreatment diesel particulate filter (DPF) unit Volvo All Engines (2010...

This function indicates that the NOx conversion efficiency is not correct Conditions for diagnostic trouble code (DTC):1) Too high NOx emissions2) Dosing too low Observable symptoms1) Engine de-rated Probable cause1) Dosing too low2) Wrong liquid in tank3) Faulty contact or defective aftertreatment control module (ACM)4) Aftertreatment diesel exhaust fluid (DEF) dosage valve5) Restricted filter6) Aftertreatment Hydrocarbon Doser, over-fueling7) Aftertreatment selective catalytic reduction (SCR) catalyst Detailed information1) This DTC is only activated if the system is in a temporary state from de-rate2) The vehicle can be driven to a repair facility in normal driving mode (one driving cycle)3) This mode is...

This function indicates that the NOx conversion efficiency is not correct Conditions for diagnostic trouble code (DTC):1) Too high NOx emissions Observable symptoms1) Possible engine de-rate Probable cause1) Charge air system2) EGR Mass Flow3) Diluted, wrong or contaminated Aftertreatment Diesel Exhaust Fluid (DEF) in Aftertreatment diesel exhaust fluid (DEF) tank4) Aftertreatment Hydrocarbon Doser, over-fueling5) Fuel Injection System Over-Fueling6) Aftertreatment selective catalytic reduction (SCR) system Dosing too low7) Insufficient Aftertreatment Diesel Exhaust Fluid (DEF) supply to Aftertreatment Diesel Exhaust Fluid (DEF) Pump8) SCR Catalyst Volvo All Engines (2010 Emissions) Fault Code: SPN 4094 FMI 1 PID: PSID 90 Nox Limits Exceeded...

This diagnostic function starts monitoring the DEF dosing pressure when the DEF pump is set to ?Running? mode. The aftertreatment control module (ACM) keeps track of the time when the pump is not in the ?Running? mode. When the time that the pump is not in “Running” mode accumulates to more than 25 % of a predetermined amount of time a DTC will set. Conditions for diagnostic trouble code (DTC):1) Dosing failure Observable symptoms1) Leakage, pressure side Probable cause1) Low fluid level in the tank2) Leakage from hoses or connections3) Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve4) Aftertreatment line connections...