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hard fault code What is a hard fault code?
It could but not likely. Do a fuel pressure test and be sure to replace the fuel filter. If you have low or no fuel pressure I would suspect the fuel pump is at fault.
If it is high enough to be splashed by the crankshaft it would foam up. That would cause a lack of oil pressure and engine damage.
We need to know the year/make/model. The most likely cause is air/fuel mixture . If you can get it scanned, most newer vehicles will give the exact cause( low fuel pressure fault code, sensor fault code). If you can't, I would start by checking check fuel pressure, or air leaks if it is a MAF system.
it has a machanical fuel pump mounted on the engine. so there would be no pressure as you turn the ignition on, but would only get pressure once the engine has turned a few times, by the starter motor, in order to create fuel pressure. but check your fuel lines, usually they would be your problem
low oil pressure is caused by, either low oil in engine or a bad oil pump
That would one of hundreds of possible causes.
Pressure test the convertor.
1 reason might b worn bearings
Had a Jeep in the shop here with that problem last week and it turned out to be low fuel pressure. Try running a fuel pressure test. The Jeep would idle ok but when you tried to accelerate the engine would stall.
Any fault that affects emissions will turn the light on. You need to have it checked for codes to know possible causes.
I thought I had high oil pressure, When I would rev the engine the oil pressure would max out on the oil pressure guage. Luckily it just turned out to be loose connections to the oil pressure sensor. I tightened the terminals and the problem went away.