It requires a scanner to properly diagnosis a check engine light.
With a scan tool.
Bill Greene
A chain auto parts store should be able to do it for you.
There are many sensors that can trip the check engine light to come on.
After repair, you reset with a scan tool.
Have vehicle scanned to determine the problem
gage of temperature go to hot position but is not hot the engine check gages light come on
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
The computer has detected a problem with the emissions system.
Get the Engine Checked Don't waste your money getting your engine checked. Just disconnect your negative side of your battery for 10 seconds. Reconnect it and your done, no more check engine light.
Have vehicle scanned to determine the problem and have codes cleared