I think the code was P0152

 

Hello Jimmy . the sensor is an indicator that the voltage it reaches is not correct for the cars running conditions you need to check the likey faults and also check sensor before trying to replace it.
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction Engine Light Code
The exact code related to Kia models is vital to start with.

Jeff

 

My car scans a P0154 on the O2DB

So it looks like the O2 Sensor in Bank 2, Sensor 1 is not reading. I hope that's why my exhaust smells like crap.

So I went out and bought this guy: Amazon.com: NGK 25158 Oxygen Sensor - NGK/NTK Packaging: Automotive
And bought this guy to help take it out: Amazon.com: Powerbuilt 648691 Oxygen Sensor Offset Puller: Automotive

I was wondering if I highlighted the right one. I read that Bank 2 is driver side, and Sensor 1 means the front.

Below is the driver side, but it's pretty close to the firewall and far back. I looked around some more, but it's the only one I could find. Do you guys know if this is the right one?

This might not be a faulty O2 sensor - the high voltage signal indicates a very rich mixture, which could be a stuck injector, and the sulphur smelling exhaust is another indication that you have a lot of unburnt fuel reacting with the CAT.
What's the mileage - a compression test might be good, seeing as the fuel might not be igniting in one cylinder due to insufficient compression.

To confirm the ID of the sensor you could disconnect each one in turn and check the response on the OBDII scanner, but below is a description.

P0152 02 Sensor Circuit High Voltage (Bank 2 Sensor 1)

A P0152 code refers to the Bank 2, sensor 1, o2 sensor. (Bank 1 would contain cylinder 1 and bank 2 is the opposite bank. Bank 2 doesn't necessarily contain cylinder 2.) "Bank 2" refers to the side of the exhaust that DOES NOT contain cylinder number 1 and "Sensor 1" indicates that it is the pre-cat sensor, or forward(first) sensor on that bank.

 

This might not be a faulty O2 sensor - the high voltage signal indicates a very rich mixture, which could be a stuck injector, and the sulphur smelling exhaust is another indication that you have a lot of unburnt fuel reacting with the CAT.
What's the mileage - a compression test might be good, seeing as the fuel might not be igniting in one cylinder due to insufficient compression.

To confirm the ID of the sensor you could disconnect each one in turn and check the response on the OBDII scanner, but below is a description.

My Sorento has about 81K miles. You might be right, I did some tests and I think the sensor is okay.

So I can confirm that the mechanic initially scanned a P0154 (not P0152) and P0456 (EVAP Leak).

I know my gas cap is a wonky, so that explains the P0456.

But Madias told me the P0154 code means my O2 sensor is not reading so I need to replace it. So that's why I bought the new sensor and the puller.

So I bought an OBD2 reader to confirm the repair myself by scanning before and after the sensor replacement.

I went to scan it and P0154 didn't come up. Instead it was P0303 Cylinder 3 misfire detected. Strange, and so I cleared it:

Turned off car and turned back on, and now my car is reading P0080 Exhaust Valve Control Solenoid Circuit High:

So this app on my phone lets me monitor my O2 sensor, so I took a car for a ride and recorded the following when I IDLE, foot off the gas and foot on the gas. I'm going to assume my O2 sensor works normal from what I see below: