What triggers a check engine on?

#1 (**permalink**) 01-29-2007, 08:07 PM

I have my ODBII back ordered but for now I'm curious to know what triggers
the check engine light?

#2 (**permalink**) 01-29-2007, 08:07 PM

i think a number of "issues" will trigger
the light...i believe you need the reader
to fig out what or which issue (50-100 potential
issues...i think) caused or triggered the info
light.....the service light is triggered by
miles driven.....

On Jan 29, 9:51 am, "Jack" <J...@xxxx.xxx> wrote:
> I have my ODBII back ordered but for now I'm curious to know what triggers
> the check engine light?

#3 (**permalink**) 01-30-2007, 01:09 AM

Jack wrote:

> I have my ODBII back ordered but for now I'm curious to know what triggers
> the check engine light?

Lots and lots of things. See: http://www.obdii.com/codes.html

JRE

#4 (**permalink**) 01-30-2007, 01:09 AM

"JRE" <nothing@nowhere.com> wrote in message
news:vcvvh.48$wT1.20@newsfe09.lga...
> Jack wrote:
>
>> I have my ODBII back ordered but for now I'm curious to know what
>> triggers the check engine light?
>
> Lots and lots of things. See: http://www.obdii.com/codes.html
>
> JRE

Cool, thanks!

#5 (**permalink**) 01-30-2007, 05:01 PM

Any number of things can cause the check engine light, from a bad O2
sensor to a cracked fuel cap (or one not on all the way). This makes
an ODBII controller all the more necessary.

On Jan 29, 11:51 am, "Jack" <J...@xxxx.xxx> wrote:
> I have my ODBII back ordered but for now I'm curious to know what triggers
> the check engine light?