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Those sending unit were notorious for getting hairline cracks in them and leaking on those older 60-80's cars...I changed many a one..It was just a thought..I'll see if i can google that and get the precise location.

One more issue. I spotted an oil leak coming from the back drivers side of the engine, and running down to the bottom where those two rubber inserts are near the oil pan. I think those are main seal weeper hole covers... Took it in to the dealership December 17th. They replaced the oil cooler...

Don't blame you...!

Well, it ended up being the drivers side downstream it's called, which they replaced this morning...I always like to save my old parts...Here tiz...! So i guess that is the P0157 location on the 2017 Jeep Wrangler Sport... BTW, I ask the guy there what brand it was. It was indeed an NGK...

Yep, makes sense once you see the diagrams and understand the layout system...BTW, there is an online Chilton manual available about $29.00 rental fee per year. May be worth the money to have access to this...I was old school, came up in the 60's working in full service gas stations learning the...

This is definitely what I was looking for...! Thanks...Now I know...So my error message was "02 Sensor 2/2 Circuit Low Engine Code P0157" So my guess is the 2/2 designates bank 2 sensor 2 which is the downstream one...

The service tech at Jeep here in Pensacola told me yesterday that it could affect my fuel system and consumption, and could damage the catalytic converter. Could start to run rough too he says....I don't want to wait around to find out. So I'm replacing them.

Nope engine is the wrong way...Maybe this is it. This is a 3.6L Jeep and Cherokee, so the web page said...

I'll have to find an online manual to see what the firing order is. Like the old Chilton Manuals I used to work with.

I'm not familiar with the codes. i don't know bank 1 from bank 2...I would need to correlate that info into which side and upper or lower sensor. All i know is I can see two on the top with the hood up. One on each side of the engine. Then there should be two more behind the fender or wheel well...

I'll have to go run the diagnostic again and look at my options...Thanks

Is there anyone here who can specifically identify which sensor it is with the code given here? I'd like to know for sure...All I know is there are four of them, two on each side of the engine, for each exhaust bank...You tube showed one of them being under the fender cover, wheel well...

Is there anyone here who can specifically identify which sensor it is with the code given here? I'd like to know for sure...All I know is there are four of them, two on each side of the engine, for each exhaust bank...You tube showed one of them being under the fender cover, wheel well...

I called them the other day and told them the problem. They referred me to my policy, showed me the page and everything...All the emission system is covered, as is the electronics package, GPS, stereo system, etc...

Have two policies...One which Jeep uses, which I bought with the vehicle...Then I do have Car Shield the Diamond Plan, the most expensive...Covers all the Electronics, and Emissions systems components...The place I'm taking it to is ASE Certified, which I told them I required...In order to use...

Not sure what brand this place uses, just have to go with what they have. My extended warranty pays for these, and a rent car if needed. I just had the oil cooler leak on me last month...Jeep dealer took care of it, and included a rental car for free, for three days...Warranty paid for...

I have a 2017 Jeep Wrangler Unlimited Sport, with a little over 50K miles on it... Just got my very first check engine light on it... Said it was the 02 sensor 2/2 Circuit Low...Engine code P0157... My extended warranty covers all of these. Problem is, they are so busy I cannot get in there...

After pulling mine off, I found a small nut and put inside the hole in the knob to keep it from locking back down.