"Al" <ecarecar@yahoo.com> wrote in message
news:111h858lafefs89@corp.supernews.com...
>I have a 98 Civic.
>
> How do I get the trouble codes?

All cars sold new in the US since January 1, 1996 conform to the OBD II
standard. It requires a code reader be connected to the car to retrieve the
codes. (I know - I think it is bad form to not make the information
available to the driver, but the feds didn't ask for my opinion.) Some auto
part chain stores will read the codes for free (call and find out) in hopes
of selling repair parts. The readers are also available for sale, starting
at about $160 US. I broke down and bought one when our Toyota had a "check
engine" light a few months ago.

Some side issues...
1) The light is there to warn you the emission control system is not working
right. Some of the codes are for things that also affect engine operation,
but that isn't their primary reason for reporting. If the engine is running
normally, the car is safe to drive in town and gently on the freeway. A few
failures can make the mixture too rich and potentially damage the catalytic
converter if you drive it hard. Otherwise, there is no problem continuing to
drive.
2) A common (and frustrating) reason for the light to come on is a loose gas
cap. I know, you're probably thinking "I'd never leave the gas cap loose"
but that was why our Toyota had the light on - I'd goofed when I filled it
the day before. If that is the case, tighten the cap and drive it. The light
should go out in a few days.
3) If the code points to an emission-related device and you live in the USA,
find out about whether your problem is covered under a mandatory federal
emission extended warranty. If you are in California, I believe the emission
warranty is extended farther.

Mike