check engine light

[crosstown]

Hey guys,
First of all thanks for reading this. I have a bit of a problem with the light. It just pop up like 2 weeks ago. The engine runs fine like before. The exhaust pipe smells the same. There's no white smoke whatsoever.
Should I worry about it?
Could it be just a tiny emission problem that the computer detected?
And should I visit the shop to scan for problem code or should I just unplug the battery to see if it would pop up again?
Thanks in advance guys,
CT.

ps. it's a 00 explorer xls.

 

[mikeh44]

get the codes read then repost the codes then someone can help autozone will read them for free

 

[crosstown]

Thanks a lot.
It says "system too lean" and the codes are
P0171 and P0174.
Any suggestion?

 

[NHale623]

Search the forums. There's a ton of info regarding those codes.

 

[Glacier991]

Likely an intake manifold leak. As mentioned, do a little homework here, you'll find TONS of info....

There is even a forum devoted to automobile computers (PCM's) and all things related.