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Check Engine Light On, But Only When I Start Car

3K views 5 replies 4 participants last post by  NeverLeaned 
#1 ·
Ok i have a weird problem?

See when I turn my key to the on position It shows the oil light, battery light, and check engine light........now I know my oil is fine, just changed it, and my batt is fine.

So why is my check engine light on?
cause when i actually start it up with the engine running, well the check engine light doesnt come on
Like it never has?

So whats the deal
Shouldnt if something was wrong with my car the check engine light would show up while I was driving?
but it only shows up when the car is just on, Like radio etc.?

any ideas?
hopefully it's not something major?
 
#6 ·
Your idiot lights are supposed to come on when you first start to the car....... its a self check to make sure they are working.

If for whatever reason you do not see an idiot light when you put the key in the on position, and when you first start the car then the system needs to be serviced....... (probably just a bad bulb)

Its just to let you know that its working because most people out there rely on these lights rather then check their oil or properly maintain their engines.
 
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