IF I HAVE FAULT CODES P0171 AND P0174, WHATS WRONG?
2002 BMW 330
January, 4, 2012 AT 9:43 PM
I changed out my thermostat last week due to car started over heating. After I changed it out the check engine light came on and I dont know whats wrong. The car runs fine and when I went to get it smog checked today it failed because of those codes. What can be the problem and how do I fix it?