I am experiencing an error code issue of P0635 that just shows up intermittently sometime when turning sometimes when just going 10 miles an hour straight ahead. So steering doesn't seem to be issue but not sure either Can I check the electrical connections myself somehow or does it have to be done by a shop? Also I have a speedometer issue. It will just stop registering any speed at all. I turn the key off and wait a little bit and sometimes but most times not it will start registering again. Sometimes these 2 issues happen simultaneously. Any ideas?