Low oil pressure light and battery light comes on at the same time while driving
I got an oil change from Walmart 2 months ago and 30 minutes after my oil change my batter light and the oil pressure light came on at the same time. The car never shut off but it lost all power as if it were going to shut off. I turned the car off and turned it back on it started up fine but now it does it every day now. So I got another oil change a month ago and changed the oil pressure switch I'm still having the same problem. Any idea of what this could be? No one seems to know. Please help I have a 2007 hyundai elantra
Check your battery connections and maybe get it tested
This likely isn't due to the first oil change. Do you have a check engine light on? Is the car running poorly? If so, the car could be wanting to stall due to air and/or fuel delivery problems. My Ranger did this when it ran out of gas months ago. Check air filter and fuel filter, etc. If you have codes, get them scanned.
If this isn't happening, take it to an auto parts store and have them check the alternator and battery. If one or both are weak, the engine may not be running correctly because the ignition system requires a lot of power, it running off will trigger the low oil pressure warning and alternator light.
Sounds like an alternator problem.. I understand it was tested and good but seeing as how the problem isn’t constant it may not be charging when the concern is happening if you had a way of checking voltage at the battery while the concern starts to happen would answer that question
How many miles? A catalyst code can be caused by mutiple things sometimes its caused by a misfire or a cracked head or blown head gasket where coolant will get in the exhaust and cause that code. Real bad on Chrysler stuff not sure about hyundai.