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19 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 488 PID: PID 105 SPN: 105 FMI: 16 Intake Manifold 1 Temperature- Data Valid But Above Normal Operating Range- Moderately Severe Level

Circuit DescriptionThe intake manifold air temperature sensor monitors intake manifold air temperature and passes information to the electronic control. The...

19 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 4951 PID: SPN: 6655 FMI: 3 Maintain ECU Power Lamp Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe Engine Control Module (ECM) requires battery power when the keyswitch is ON and for a period of time...

19 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 4952 PID: SPN: 6655 FMI: 4 Maintain ECU Power Lamp Circuit- Voltage Below Normal or Shorted to Low Source

Circuit DescriptionThe Engine Control Module (ECM) requires battery power when the keyswitch is ON and for a period of time...

19 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 4956 PID: SPN: 6713 FMI: 13 Variable Geometry Turbocharger Actuator Software- Out of Calibration

Circuit DescriptionThe variable geometry turbocharger (VGT) is electronically activated by the VGT actuator. The VGT actuator is a smart device...

19 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 4957 PID: SPN: 6713 FMI: 31 Variable Geometry Turbocharger Actuator Software- Condition Exists

Circuit DescriptionThe variable geometry turbocharger (VGT) is electronically activated by the VGT actuator. The VGT actuator is a smart device...

19 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 515 PID: SID 232 SPN: 3514 FMI: 3 Sensor Supply 6 Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe sensor supply 6 circuit of the engine control module (ECM) is a dedicated (+) 5-VDC supply for the...

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