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11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3422 PID: SPN: 4344 FMI: 3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 3 is controlled by the aftertreatment diesel exhaust fluid controller, and receives...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3425 PID: SID 254 SPN: 4344 FMI: 5 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Current Below Normal or Open Circuit.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 3 is controlled by the aftertreatment diesel exhaust fluid controller, and receives...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3426 PID: SPN: 4346 FMI: 3 Aftertreatment Diesel Exhaust Fluid Line Heater 4 Circuit – Voltage Above Normal or Shorted to High Source.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 4 is powered and controlled by the aftertreatment diesel exhaust fluid controller....

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3429 PID: SID 254 SPN: 4346 FMI: 5 Aftertreatment Diesel Exhaust Fluid Line Heater 4 Circuit – Current Below Normal or Open Circuit

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 4 is powered and controlled by the aftertreatment diesel exhaust fluid controller....

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 343 PID: SID 254 SPN: 629 FMI: 12 Electronic Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component.

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

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 346 PID: 253 SPN: 630 FMI: 12 Engine Control Module Calibration Memory Software – Bad Intelligent Device or Component.

Circuit DescriptionThe accelerator interlock switch and powertrain protection torque limit switch, clutch pedal position switch and engine protection shutdown manual...

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