Cumminz

Cummins ISM CM870 (2003-06) Fault Code: 2349 PI...

The ECM monitors the voltage level of this circuit and logs a fault code if the voltage level indicates an open circuit or short to voltage source. This fault is...

Cummins ISM CM870 (2003-06) Fault Code: 2348 PI...

Possible causes: 1) A EGR valve assembly internal malfunction that is causing the EGR valve not to close fully. Another possible cause of this fault code is high resistance in...

Cummins ISM CM870 (2003-06) Fault Code: 2347 PI...

Note: This fault code may become active if the protective shipping sticker is not removed from the port located on the end opposite of the connector. When installing a new...

Cummins ISM CM870 (2003-06) Fault Code: 2346 PI...

The most common cause of this fault code is low boost. Low boost can be caused by several factors: leaking charge air cooler, loose charge air cooler clamps, malfunctioning components,...

Cummins ISM CM870 (2003-06) Fault Code: 234 PID...

Possible causes: 1)External fuel sources drawn into the intake air passage2)Reverse powering (motoring) of the engine3)Tampering of the engine speed/position sensors.Inspect the intake manifold for sources of flammable vapors. Check...

Cummins ISM CM870 (2003-06) Fault Code: 2321 PI...

The CM870 controls are able to function almost normally on a single speed sensor. In the event that there is a signal glitch on the engine speed sensor, the system...