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27 augustus, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 441 PID: PID 168 SPN: 168 FMI: 18 Battery 1 Voltage- Data Valid But Below Normal Operational Range- Moderately Severe Level

Circuit DescriptionThe engine control module (ECM) receives constant voltage from the batteries through the unswitched battery wires that are connected...

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27 augustus, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 442 PID: PID 168 SPN: 168 FMI: 16 Battery 1 Voltage- Data Valid But Above Normal Operational Range- Moderately Severe Level

Circuit DescriptionThe engine control module (ECM) receives constant voltage from the batteries through the unswitched battery wires that are connected...

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27 augustus, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4449 PID: SPN: 6773 FMI: 16 Aftertreatment 1 Particulate Sensor Regeneration Status- Data Valid But Above Normal Operating range- Moderately Severe Level

Circuit DescriptionThe aftertreatment particulate matter sensor is a smart device and communicates with the engine control module (ECM) via the...

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27 augustus, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4453 PID: SPN: 5848 FMI: 7 Aftertreatment 1 SCR Intermediate NH3- Mechanical System Not Responding or Out of Adjustment

Circuit DescriptionThe aftertreatment SCR intermediate NH3 (ammonia) sensor is a smart device that communicates with the engine control module via...

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27 augustus, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4484 PID: SPN: 3667 FMI: 7 Engine Air Shutoff- Mechanical System Not Responding or Out of Adjustment

Circuit DescriptionThe air shutoff valve is either an original equipment manufacturer (OEM) or Cummins® installed component that shuts off the...

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27 augustus, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 451 PID: SPN: 157 FMI: 3 Injector Metering Rail 1 Pressure Sensor Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated...

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