The left engine light indicates low oil pressure. The right is the check engine light. Low oil pressure would trigger a check engine warning. And both would illuminate.
Try changing the engine oil. If that doesn’t work try pulling the sensor of the idiot light and hooking in a guage, to see what the pressure actually is.
Sometimes the sensors go bad, and send incorrect signals to the engine management system.
One of my freinds bought a brand new Dodge with the Cummins. Anytime he got it warmed up, it would go into limp home mode. Dealer tried to trouble shoot it, and couldn’t.
Factory tech showed up, and they took it out on the highway. After forty miles it went into limp home mode. Factory tech had his laptop hooked up. The drivetrain control module thought the transmission was overheated. Tech pulled the dipstick, and stuck a long thermocouple in the dipstick tube. Sensor was showing 160-F warmer than it really was.
Dealer replaced the sensor, and the problem disappeared.