Code 2237, 2020 Telluride

[Saturndude]

My neighbor has a 2020 Telluride, it seems very nice. He bought it a couple of years ago at 41,000 miles, and now it is around 143,000 miles.

My 2006 OBD2 code scanner says "works with 2007+ vehicles" but of course nobody could predict today's electronics. My scanner told me the conditions of the first code (MPH, TPS, ECT, IAT, 560 seconds after startup, fuel trim, etc) but does not tell me if all 4 codes registered at the same time:

Code 2237 (O2 sensor positive current control circuit / open bank 1 / sensor 1)

Code 2251 (O2 sensor negative current control circuit / open bank 1 / sensor 1)

Code 0131 (O2 circuit low voltage (bank 1, sensor 1)

Code 2237 (O2 sensor positive current control circuit / open bank 1 / sensor 1)


I see a few generic websites that have a "cookie cutter" page for each error code (Kelly Blue Book's web site says "check for frayed wires or bad connections to the oxygen sensor"), but when I look at a couple of Kia forums (not just this one), I do NOT see a lot of OBD2 codes mentioned. Is this because today's cars (and trouble codes) are too complex for us regular guys to handle?

I've seen Youtube videos where very expensive scanners that can reveal problems in communications with MANY sensors on MULTIPLE computer busses with a neat graphical display, far more than my scanner will ever find out about. It might even be possible for computer communication issues to never rise to the level of an OBD2 code. One such example might be today's BMWs that require a dealer-only tool to acclimate your computer to a new battery!

I would characterize my mechanic skills as "intermediate". More than just changing fluids, brakes, suspension and cooling, I've COMPETENTLY rebuilt front calipers, replaced power steering equipment, timing chains, and head gaskets (installing polyurethane inserts in both "GM dog-bone" engine mounts in BOTH of my 1.9L Saturns was an easy lifetime upgrade).

I'm smart enough not to break bolts, yes, but this problem appears to be electronic, and I don't want to fry anything (plugging the wrong power cable into my SATA Windows 7 hard drive several years back cost me $1,500 to hire Ontrack data recovery center in Eden Prairie, MN). Can I check the voltage of an oxygen sensor when the vehicle is running? Shut off? Any idea where this sensor is on this model (I don't have regular access to the vehicle)? Aside from checking for frayed or melted wires, how much further should I go before "buttoning it up" and taking it to the dealer? Can I just drop in a new O2 sensor like we've been doing for years?

Thanks in advance for all your help!

 

[Saturndude]

Okay, I found a Youtube video by "World Mechanics" where they did the O2 sensor on a Kia 3.3L. I figure "Bank 1, Sensor 1" is in the same place on a 3.8 as the 3.3, yes? I think I'm gonna recommend we go ahead and do it ourselves. All those "other busses" might not have any problems at all. It might be as simple as resetting the OBD2 code after we're done.

I need to "up my game" here. After the April 8, 2024 eclipse, and my April 15 taxes, it looks like I've got a head gasket failing on my silver 1.9L Saturn. I need to finish the power steering pump on the green 1.9L Saturn first though, so I can drive it while I'm working on the silver one.