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21 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 197 PID: PID 2560 SPN: 111 FMI: 18 Coolant Level- Data Valid But Below Normal Operational Range- Moderately Severe Level

Circuit DescriptionThe coolant level sensor is a switch and is used to measure the level of the engine coolant in...

21 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 1974 PID: PID 101 SPN: 101 FMI: 15 Crankcase Pressure- Data valid But Above Normal Operating Range- Moderately Severe Level

Circuit DescriptionThe crankcase pressure sensor is used to monitor the pressure inside the crankcase. The engine control module (ECM) supplies...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 1976 PID: SID 27 SPN: 641 FMI: 15 VGT Actuator Driver Temperature- Data Valid But Above Normal Operating Range- Least Severe Level

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

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 1977 PID: SID 382 SPN: 3556 FMI: 5 Aftertreatment Doser Circuit- Current Below Normal or Open Circuit

Circuit DescriptionThe aftertreatment fuel injector is electronically controlled by the engine electronic control module (ECM) through a pulse width modulated...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 1981 PID: SPN: 3936 FMI: 15 Aftertreatment Diesel Particulate Filter System- Data Valid But Above Normal Operational Range- Least Severe Level

Circuit DescriptionThe engine aftertreatment system monitors the soot load in the aftertreatment diesel particulate filter. Under normal operating conditions, the...

20 August, 2025

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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 212 PID: PID 175 SPN: 175 FMI: 3 Engine Oil Temperature Sensor 1 Circuit- Voltage Above Normal or Shorted to High Source

Circuit DescriptionThe engine oil temperature sensor is a variable resistor sensor and is used to measure the temperature of the...

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