Replaced catalytic and o2 sensor check engine light won't reset 2005 kia spectra lx

Considering I believe you only have 1 bank, it would be the 2nd oxygen sensor in your exhaust system, 1 st O2 sensor being the closest to your Catalytic convertor, the 2nd one is a little further down the line.

It is the first O2 sensor you come to on the exhaust system. Usually in the exhaust manifold or catalytic converter. Heater circuits are 99% of the time the O2 sensor...1% is wiring on the harness side..

P0138 KIA HO2S12 Circuit High Voltage

check the plug to the o2 sensor first

reset the code and see if same code comes back

don't assume it's the part; check wiring as well as considering buying the new o2 sensor

free rental tool to help you install this as well from your local auto parts store

To clarify, none of this has anything to do with your a/c.
Code 650 is for a problem with the check engine light circuit.
Code 30 and 134 involve the heater circuit for the O2 sensor in front of the catalytic converter. The O2 sensors have a heater that allows the sensors to start working quickly after you start the engine. The sensor and the heater circuit would need to be tested.
The O2 sensors have nothing to do with your car heater or A/C.

Bank one sensor one should be the sensor in front of the catalytic converter. Bank two would be on the side with cylinder 2 if you had a V6 engine.

P0171 System too Lean (Bank 1)
P2097 Post Catalyst Fuel Trim System Too Rich
P2271 O2 Sensor Signal Stuck Rich
P2626 O2 Sensor Pumping Current Trim Circuit/Open
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FGTech Galletto 2

Here is what i found on this ...Hope this helps ??

Could be a number of things. A common problem is the O2 sensors. Shoot down to your local Autozone or Pep Boys and have them pull eror codes out of the system. That will tell you where to start looking

They are located on the exhaust system, most cars have atleast 2, the first is the before the cat converter or also known as the up steam o2, The second being the down stream o2 which is located behind the cat converter.

They almost look like a spark plug sticking out of the exhaust pipe with a few wires coming out the top of it.

o2 Sensors can be very costley I would suggest having your local auto parts store such as Autozone or Advanced Auto Parts resetting your engine light, They will do it for free, also if you use some high test gas for your emissions inspection as well as make sure the car is run for a little bit before going to have the test you will find by doing this it will drop all your numbers needed to pass the test.

It is a very good chance that once the light is reset it won't come back on.

Good Luck and I hope this helps.

a wrench and just unplug the sensor wire and screw out and install new one. they make a special socket but i just use a wrench.