Code 24???

[TommyL]

I took my 90 out for a spin yesterday after trying to erase the infl rest light grrrrrr. When I come to a stop, the idle goes way down, the "check engine light" and the "ride control light" come on. After driving for a bit to operating temp, the lights go out and all is well...car runs great.

I pulled the codes and have a code 24 "speed sensor". This sensor was replaced about 2 years ago and it might have 5,000 kms on the new one.

Any ideas as to what might be the cause of this code 24 other then the actual sensor itself ? Seems odd that it runs great after it gets to running temp and both lights go out.

As well, If I retrieve the codes and dissconnect the battery...will this erase the codes ? I would like to erase them and see if the code 24 comes back.

Thanks, Tom