Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) SPN 4000–5500 “ECM SPN 4094, NOx Limits Exceeded Due to Insufficient Diesel Exhaust Fluid (DEF) Quality MID 128 PSID 90”, page 77 “ECM SPN 4095, NOx Limits Exceeded Due to Interrupted Diesel Exhaust Fluid (DEF) Dosing MID 128 PSID 90”, page 77 “ECM SPN 4334, Afterteatment Diesel Exhaust Fluid (DEF) Dosing Absolute Pressure – MID 128 PPID 273”, page 78 “ECM SPN 4339, Aftertreatment SCR Feedback Control Status MID 128 PSID 90”, page 78 “ECM SPN 4354, Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1 – MID 128 PSID 103”, page 79 “ECM SPN 4356, Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3 – MID 128 PSID 102”, page 79 “ECM SPN 4374, Aftertreatment Diesel Exhaust Fluid (DEF) Pump Motor Speed – MID 128 PSID 87”, page 79 “ECM SPN 4375, Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage – MID 128 PSID 121”, page 80 “ECM SPN 4376, Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve – MID 128 PSID 105”, page 81 “ECM SPN 4752, Engine Exhaust Gas Recirculation (EGR) Cooler Efficiency – MID 128 SID 282”, page 81 “ECM SPN 4811, Engine Piston Cooling Oil Pressure MID 128 PPID page 81 “ECM SPN 4813, Engine Oil Thermostat Bypass Valve Opening – MID 128 PSID 72”, page 82 “ECM SPN 4815, Engine Cooling Fan Thermal Switch Position – MID 128 PPID 333”, page 82 “ECM SPN 5246, Aftertreatment SCR Operator Inducement Severity – MID 128 PSID 46”, page 83 “ECM SPN 5285, Charge Air Cooler (CAC) Temperature – MID 128 PID 52”, page 84 “ECM SPN 5298, Aftertreatment Diesel Oxidation Catalyst (DOC) Conversion Efficiency – MID 128 PSID 99”, page 84 “ECM SPN 5392, Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve Loss of Prime – MID 128 PSID 121”, page 85 “ECM SPN 5394, Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve – MID 128 PSID 89”, page 85 “ECM SPN 5394, Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve – MID 128 PSID 90”, page 86 “ECM SPN 5485, Aftertreatment Diesel Exhaust Fluid (DEF) Pump Orifice – MID 128 PSID 121”, page 86 13