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Cummins ISX12 CM2250 (2010-12) Fault Code: 271 ...

Circuit DescriptionThe circuit is a pulse-width modulated (PWM) driver in the engine control module (ECM) that controls the electronic fuel pump actuator. The actuator is grounded in the ECM. The...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2659...

Circuit DescriptionWhen the engine coolant temperature nears the engine protection limits, the EGR valve will be closed to reduce the coolant temperature. This fault code is used as an information...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2646...

Circuit DescriptionWhen the engine coolant temperature nears the engine protection limits, the exhaust gas recirculation (EGR) valve will be closed to reduce the coolant temperature. This fault code is used...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2639...

Circuit DescriptionThe engine aftertreatment system monitors the soot load in the aftertreatment DPF. Under normal operating conditions, the aftertreatment DPF is self-cleaning, where soot is converted to carbon dioxide, nitrogen,...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2639...

Circuit DescriptionThe engine aftertreatment system monitors the soot load in the aftertreatment DPF. Under normal operating conditions, the aftertreatment DPF is self-cleaning, where soot is converted to carbon dioxide, nitrogen,...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2638...

Circuit DescriptionThe aftertreatment system is monitored by three temperature sensors that are located in the exhaust system. The aftertreatment intake temperature sensor is located after the turbocharger outlet, at the...