Heavy Equipment Repair Questions? Ask an Expert Now.
It is normal for the oil pressure light to stay on with the key in the on position. If the oil pressure is causing the engine to shut down, there should be a code in the ECM for low oil pressure. Also, if the engine will not start back up after it shuts down, a low oil pressure warning will not cause the engine not to start.
It sounds like you have either a power supply problem or faulty ECM. I have seen this before.
When an engine shuts down and has no check engine lights come on and will not restart, most often I find the ECM has lost power or the ECM is faulty.
Please reply back if you need more help or have more questions.