I have a 2005 KIA Spectra EX and got the following codes. P2626. P0171.P0170. Where should I start?

Question

I have a 2005 Kia Spectra Ex manual trans. 4 Cylinder and got the following codes. P2626.P0171.P0170. Where should I begin. Not sure if just replacing upper and lower o2 sensor will fix the problem.

Answer 1

HI there,

With these codes, I would first replace the front O2 sensor. You have codes for the front O2 sensor, a lean condition and a rich condition. Since all of these are related to the front sensor, change that first, clear the codes and see if any return.