my 2004 trd has had the check engine light on for at least a year.

I can get rid of it by unhooking the battery and hooking it up again.This lasts as much as a week then the light comes on.Anyone have a cure

 

maybe stop by an auto parts store and borrow their code reader and fix the part/system that's throwing the error?

 

What he said. There is a reason that light comes on!! You could be causing more damage by not fixing what ever the issue is.

Fix the problem and the light will go away.

 

Is your name Penny?
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Scene: Inside Penny’s car.

Sheldon: Thank you for driving me to work.

Penny: You know this is my day off, Sheldon.

Sheldon: Oh, good. I’m not keeping you from anything. Your check engine light is on.

Penny: Mm-hmm.

Sheldon: Typically that’s an indicator. To, you know, check your engine.

Penny: It’s fine, it’s been on for, like, a month.

Sheldon: Well, actually, that would be all the more reason to, you know, check your engine.

Penny: Sheldon, it’s fine.

Sheldon: If it were fine, the light wouldn’t be on. That’s why the manufacturer installed that light, to let you know it’s not fine.

Penny: Uh, maybe the light’s broken.

Sheldon: Is there a “check the check engine light light”? (Penny takes a drink of coffee) O-o-o-oh!

Penny: What?

Sheldon: Studies have shown that performing tasks such as eating, talking on a cell phone or drinking coffee while driving reduces one’s reaction time by the same factor as an ounce of alcohol.

Penny: Do you have any alcohol?

Sheldon: Of course not.

Penny: Too bad.

 

Use a code scanner. You can borrow one from your local Advance or AutoZone.

 

In my great state, Ca., you can't smog you're vehicle with the check engine light on. I spent $79.00 on a code reader. After changing the plugs and wires and an O2 sensor, check engine light is off and passed smog.

 

Show your tacoma the respect it deserves man fix it they re easy to work on. Plug it in, buy the hayned manual and fix it.