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20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 3165 PID: SPN: 4363 FMI: 0 Aftertreatment 1 SCR Outlet Temperature- Data Valid But Above Normal Operating Range- Most Severe Level

Circuit DescriptionThe aftertreatment SCR (selective catalytic reduction) temperature sensor module is a smart device that communicates with the engine control...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 3167 PID: SID 382 SPN: 3556 FMI: 18 Aftertreatment Doser- Data Valid But Below Normal Operaing Range- Moderately Severe Level

Circuit DescriptionThe aftertreatment fuel injector is electronically controlled by the engine electronic control module (ECM) through a pulse width modulated...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 3168 PID: SPN: 3936 FMI: 16 Aftertreatment Diesel Particulate Filter System- Data Valid But Above Normal Operating Range- Moderately Severe Level

Circuit DescriptionThe ECM calculates an aftertreatment diesel particulate filter flow resistance, using the aftertreatment diesel particulate filter differential pressure and...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 322 PID: SID 1 SPN: 651 FMI: 5 Injector Solenoid Driver Cylinder 1 Circuit- Current Below Normal or Open Circuit

Circuit DescriptionThe injector solenoid valves control fueling quantity and injection timing. The engine control module (ECM) energizes the solenoid by...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 3223 PID: SPN: 3490 FMI: 4 Aftertreatment Purge Air Actuator Circuit- Voltage Below Normal or Shorted to Low Source

Circuit DescriptionThe aftertreatment purge air actuator is used to purge the aftertreatment fuel injector system of fuel after active regeneration...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 3224 PID: SPN: 3490 FMI: 3 Aftertreatment Purge Air Actuator Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe aftertreatment purge air actuator is used to purge the aftertreatment fuel injector system of fuel after active regeneration...

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