I obviously don't want to fix it if it ain't broken. I may not have
formulated my question properly, but all I wanted to know was "Does a 2002
Hyundai Elantra retain the last error code, even if the Check Engine light
went out on its own".

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Yes, for a period of time. Eventually, it'll delete that, too, but it'll
take much longer than killing the lamp.
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Ghislain - 14 Mar 2008 17:48 GMT
Thanks,
Ghislain
"hyundaitech" <notpublic@not.public.com> wrote
5ab5f3e748e50107062667ad49db76fb@localhost.talkaboutautos.com...
> Yes, for a period of time. Eventually, it'll delete that, too, but it'll
> take much longer than killing the lamp.
[quoted text clipped - 3 lines]
> http://www.talkaboutautos.com/group/alt.autos.hyundai/
> More information at http://www.talkaboutautos.com/faq.html

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Ghislain - 14 Mar 2008 19:45 GMT
The check engine light came back on today and the issue apparently is the
right front wheel speed sensor. A quick seach on the net seems to indicate
that this is a fairly common issue with these cars. How difficult is that
sensor to replace? Special tools needed?
Thanks.
"hyundaitech" <notpublic@not.public.com> wrote
5ab5f3e748e50107062667ad49db76fb@localhost.talkaboutautos.com...
> Yes, for a period of time. Eventually, it'll delete that, too, but it'll
> take much longer than killing the lamp.
[quoted text clipped - 3 lines]
> http://www.talkaboutautos.com/group/alt.autos.hyundai/
> More information at http://www.talkaboutautos.com/faq.html

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hyundaitech - 14 Mar 2008 23:08 GMT
There's certainly nothing complicated about replacing the sensor, but
sometimes they're quite difficult to work with. Often, the sensor will
seize in the steering knuckle and won't come out. Otherwise, it's a
simple matter of removing the wheel and fender liner and
unbolting/unclipping the wire and sensor, and disconnecting it.
Beware, though, a DTC indicating a problem with the wheel speed sensor
signal doesn't necessarily mean the sensor itself is the culprit. The
tone wheel on the axle could be cracked or damaged. Or the wiring could
be cut or chewed. I've seen each of these more frequently than wheel
speed sensor failures.
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Ghislain - 15 Mar 2008 02:13 GMT
I'll simply let the dealer fix it.
Thanks,
Ghislain
> There's certainly nothing complicated about replacing the sensor, but
> sometimes they're quite difficult to work with. Often, the sensor will
[quoted text clipped - 12 lines]
> http://www.talkaboutautos.com/group/alt.autos.hyundai/
> More information at http://www.talkaboutautos.com/faq.html

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