Cummins ISM CM870 (2003-06) Fault Code: 731 PID: S064 SPN: 723 FMI: 7/7 Engine Speed Sensor and Camshaft Position Sensor – Mechanical Misalignment Between Camshaft and Crankshaft Sensors. Engine position signal from the engine speed sensor and camshaft position sensor do not match.

Possible causes:

1)Loose, missing, or corroded grounds
2)Damaged tone wheel teeth
3)Loose crankshaft tone wheel
4)Static timing misset
5)Front gear train slippage
6)Misoriented engine speed or camshaft position sensor
7)Electrical noise.

Possible repairs:

1)Replace the speed or position sensor.
2)Replace the crankshaft or injector camshaft, whichever has malfunctioned.

Related

Categories Cumminz, DTC TRUCKS, ISM CM870 (2003-06) Tags -, 2003-06, 7/7, 723, 731, and, between, Camshaft, CM870, Code, Crankshaft, Cummins, do, Engine, Fault, FMI, from, ISM, match., Mechanical, Misalignment, Not, PID, Position, S064, Sensor, Sensors., signal, Speed, SPN, the

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