23 June, 2025Cummins 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. Possible causes: 1)Loose, missing, or corroded grounds2)Damaged tone wheel teeth3)Loose crankshaft tone wheel4)Static timing misset5)Front gear train slippage6)Misoriented engine speed or camshaft position sensor7)Electrical noise. Possible repairs: 1)Replace the speed or position sensor.2)Replace the crankshaft or injector camshaft, whichever has malfunctioned. Compartir en Facebook Se abre en una nueva ventana. Compartir en Twitter Se abre en una nueva ventana. Guardar en Pinterest Se abre en una nueva ventana. Regresar al blog