P0131 and P2251 codes showed up... pls help

[turbolover]

Guys I just got check engine light on my 2006 2.3L. I scanned for CEL codes and got P0131 Powertrain O2 Sensor circuit low voltage Bank 1 sensor 1 and pending P2251 Powertrain O2 sensor negative current control/open bank 1 sensor 1. What do I do to fix it? Do I replace the O2 sensor or something else? How many sensors are there and which one do I replace? Where is it located? Where is the cheapest place to buy it?

Thanks

[Superchargedx]

Front o2 in the manifold... They are notorious!
But.... Also notorious for taking out the threads on removal. I have had 95%success rate by heating the "bung hole" till it is absolutely glowing red. Usually comes out like butter. Worst case just needs a thread chase if your careful

[turbolover]

Front o2 in the manifold... They are notorious!
But.... Also notorious for taking out the threads on removal. I have had 95%success rate by heating the "bung hole" till it is absolutely glowing red. Usually comes out like butter. Worst case just needs a thread chase if your careful

You got that right supercharged, I had to take it in because I couldn't take it out myself. Cost me $150 extra of course they striped the treads.

[ryan2.3]

I just cut the wire, put a deep socket on it and got it off with a ratchet, wasn't that rusted tbh