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 po
Share
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.