Cummins ISL CM850 (2003-06) Fault Code: 731 (Marine) PID: SID 64 SPN: 723 FMI: 7 Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment. Mechanical misalignment between the crankshaft and camshaft engine speed sensors.
Cummins ISL CM850 (2003-06) Fault Code: 731 (Marine) PID: SID 64 SPN: 723 FMI: 7 Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment. Mechanical misalignment between the crankshaft and camshaft engine speed sensors.
This fault will become active anytime the ECM receives a signal from both the primary EPS (crankshaft sensor) and the backup EPS (camshaft sensor), and the ECM determines that the camshaft and crankshaft signals are not in the correct phase. If this fault code is active immediately following a repair that includes camshaft removal, it is likely that the camshaft gear was installed incorrectly and is not timed correctly.
Possible repairs:
1)Replace the camshaft position sensor. Refer to Procedure 019-363 in Section 19.
2)Replace the crankshaft position sensor.
3)Replace the tone wheel.
4)Replace, tighten, or clean the ground wires or connections.
5)Remove and install camshaft to properly align timing marks at TDC.
6)Replace the crankshaft assembly
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