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27 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4517 PID: SPN: 237 FMI: 13 Vehicle Identification Number- Out of Calibration

Circuit DescriptionMessages sent from OEM VECUs or transmission ECUs are received by the Cummins® ECM and used for controlling the...

27 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4518 PID: SPN: 5862 FMI: 3 Aftertreatment 1 SCR Intermediate Gas Temperature Sensor Circuit- Voltage Above Normal or Shorted to High Source

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

27 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4519 PID: SPN: 5862 FMI: 4 Aftertreatment 1 SCR Intermediate Gas Temperature Sensor Circuit- Voltage Below Normal or Shorted to Low Source

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

27 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 452 PID: PID 157 SPN: 157 FMI: 3 Injector Metering Rail 1 Pressure Sensor Circuit- Voltage Below Normal or Shorted to Low Source

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

27 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4521 PID: SPN: 5862 FMI: 2 Aftertreatment 1 SCR Intermediate Gas Temperature Sensor- Data Erratic, Intermittent, or Incorrect

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

27 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4524 PID: SPN: 5862 FMI: 0 Aftertreatment 1 SCR Intermediate Gas 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...

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