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Volvo All Engines (2010 Emissions) Fault Code: SPN 4094 FMI 18 PID: PSID 90 Nox Limits Exceeded Due to Insufficient Reagent Quality

This function indicates that the NOx conversion efficiency is not correct

Conditions for diagnostic trouble code (DTC):
1) Too high NOx emissions

Observable symptoms
1) Possible engine de-rate

Probable cause
1) Charge air system
2) EGR Mass Flow
3) Diluted, wrong or contaminated Aftertreatment Diesel Exhaust Fluid (DEF) in Aftertreatment diesel exhaust fluid (DEF) tank
4) Aftertreatment Hydrocarbon Doser, over-fueling
5) Fuel Injection System Over-Fueling
6) Aftertreatment selective catalytic reduction (SCR) system Dosing too low
7) Insufficient Aftertreatment Diesel Exhaust Fluid (DEF) supply to Aftertreatment Diesel Exhaust Fluid (DEF) Pump
8) SCR Catalyst

Volvo All Engines (2010 Emissions) Fault Code: SPN 4094 FMI 1 PID: PSID 90 Nox Limits Exceeded Due to Insufficient Reagent Quality
Volvo All Engines (2010 Emissions) Fault Code: SPN 3936 FMI 1 PID: PSID 28 Aftertreatment DPF System
Volvo All Engines (2010 Emissions) Fault Code: SPN 3936 FMI 0 PID: PSID 28 Aftertreatment DPF System
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 FMI 9 PID: Aftertreatment DPF Switch
Volvo All Engines (2010 Emissions) Fault Code: SPN 3675 FMI 7 PID: PPID 330 Engine Turbocharger Compressor Bypass Valve Position