I was trouble shooting a 1221 code on my '94 530i and have always thought a Peake tool might be useful. Question is, does it tell you much more detail other than "#1 O-2 Sensor" ? Especially since this code from the stomp test could be thrown by all sorts of things.

It would make it easier to reset lights etc. as well, and I don't like paying folks $85 to pull codes. My old indy in San Antonio never charged me anything, but don't know of anyone here in Dallas that will pull the codes free and sell me the parts to DIY.

Any help appreciated,

R.