Give us the year, make, model and engine along with the codes you're getting and what parts you have changed and maybe we can help you. Some codes are the result from other problems.
I changed my rediator and the engine light came on and remained on, how do i get this light off
It is illegal to disable the check engine light.
Did you reset the light? I don't know what gasket you changed, but undoubtedly that was not the problem. The check engine light comes on when there is a problem with the emissions system.
A few of the top reasons a check engine light are on is the gas cap is not tight, the oil may need changed, or a tune up is needed. A mechanic can run a diagnostics test for a small fee.
changed battery engine light stays on
i just changed my batterys out on my truck now my check engine light is on?
There are hundreds of things that can couse a check engine light. You need to have it checked for codes.
It means your engine is no longer needed to be fixed
The inspection light will come on when the engine is not operating properly. A check of the engine electronics is needed to find the problem that is turning the light on.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
on mine i just changed the o2 sensor located in the front by fan
Then you may want to have a mechanic check it out.