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11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3236 PID: SPN: 4363 FMI: 16 Aftertreatment SCR Outlet Temperature – Data Valid But Above Normal Operating Range – Moderately Severe Level.

Circuit DescriptionThe selective catalytic reduction (SCR) outlet gas temperature sensor is used by the engine control module (ECM) to monitor...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3237 PID: SID 254 SPN: 4340 FMI: 3 Aftertreatment Diesel Exhaust Fluid Line Heater 1 Circuit – Voltage Above Normal or Shorted to High Source.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 1 is controlled by the aftertreatment diesel exhaust fluid controller, and receives...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3237 PID: SID 254 SPN: 4340 FMI: 3 Aftertreatment Diesel Exhaust Fluid Line Heater 1 Circuit – Voltage Above Normal or Shorted to High Source.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 1 is controlled by the ECM, and receives power through the switch...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3238 PID: SPN: 4340 FMI: 4 Aftertreatment Diesel Exhaust Fluid Line Heater 1 Circuit – Voltage Below Normal or Shorted to Low Source.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 1 is controlled by the ECM, and receives power through the switch...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 3239 PID: SPN: 4342 FMI: 3 Aftertreatment Diesel Exhaust Fluid Line Heater 2 Circuit – Voltage Above Normal or Shorted to High Source.

Circuit DescriptionThe aftertreatment diesel exhaust fluid line heater 2 is controlled by the aftertreatment diesel exhaust fluid controller, and receives...

11 May, 2025

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Cummins ISB4.5 CM2150 Fault Code: 324 PID: SID 6 SPN: 653 FMI: 5 Injector Solenoid Driver Cylinder 3 Circuit – Current Below Normal or Open Circuit.

Circuit DescriptionThe injector solenoid valves control fueling quantity and injection timing. The electronic control module (ECM) energizes the solenoid by...

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