Why did my engine light come on? Why has my tire light been on constantly?

Agree with Pushrod. The tire concern is unrelated to the engine light concern. The tire concern could actually mean your tire or tires are getting low due to a leak. This is why the light is present - to keep you from experiencing a safety hazard. Seek assistance on that as soon as possible as it could be a danger to drive with a low tire. The engine light will require troubleshooting specific to engine performance concerns. Go to this part of RepairPal to find a shop near you: https://repairpal.com/repair-shops