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26 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6343 PID: SPN: 38 FMI: 13 Fuel Level 2- Out of Calibration

Circuit DescriptionNormally, switches, accelerators, and other components are connected to the engine control module (ECM) directly through individual wires. Multiplexing...

26 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6416 PID: SPN: 3703 FMI: 31 Aftertreatment Regeneration Inhibited Due to Inhibit Switch- Condition Exists

Circuit DescriptionThe OEM truck manufacturer can install a permit switch in the dash or send an inhibit message via the...

26 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6417 PID: SPN: 974 FMI: 19 SAE J1939 Multiplexed Remote Accelerator Pedal or Lever Sensor System- Received Network Data in Error

Circuit DescriptionNormally, switches, accelerators, and other components are connected to the engine control module (ECM) directly through individual wires. Multiplexing...

26 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6418 PID: SPN: 1072 FMI: 3 Engine Brake Actuator Driver 1 Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe Engine Control Module (ECM) controls engine brakes on cylinders 1, 2, and 3 by sending a signal on...

26 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6419 PID: SPN: 1072 FMI: 4 Engine Brake Actuator Driver 1 Circuit- Voltage Below Normal or Shorted to Low Source

Circuit DescriptionThe Engine Control Module (ECM) controls engine brakes on cylinders 1, 2, and 3 by sending a signal on...

26 August, 2025

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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6421 PID: SPN: 1073 FMI: 3 Engine Brake Actuator Driver Output 2 Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe engine control module (ECM) controls engine brakes on cylinders 4, 5, and 6 by sending a signal on...

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