2002 liberty '02 sensors

[Mowery]

Hello, our sons 2002 keeps throwing codes for 02 sensors or a cat. It seems to flip flop. I just clear that code and drive on. What are the cheapest sensors you have had luck with? Amazon has all 4 for like $60, napa they are like 60 each. I know napa is better but geez...

 

[bench10]

What kind of code do you have?
But I wouldn't go that cheap. Or else you'll be doing the job again. Rock Auto has them for about 30$ each for good brands like NTK or Denso. I just replaced mine and haven't had an issue with them since.

 

[budget76]

Do you KNOW WHICH sensor is throwing the code. It cannot be all 4 at same time. DIAGNOSE this. Hook up a scanner or such. What are your O2 levels? What about injectors. Yes, you could replace the O2 sensors, bvut maybe the cats are plugged. I have no way without reading the ECU, testing the cats. Is one overheating while second ok? Point a temperature gun once warm.

 

[bpproct_KK_20212]

What kind of code do you have?
But I wouldn't go that cheap. Or else you'll be doing the job again. Rock Auto has them for about 30$ each for good brands like NTK or Denso. I just replaced mine and haven't had an issue with them since.

Question - I have a 2012 Liberty 4x4 Limited and can't get my hand up to unclip the connector on the drive side front oxygen sensor. If you have a KK, or maybe the KJ is similiar, how did you reach it? Any suggestions appreciated.

 

[Krf]

Honestly, it's hard to know where different distributor's parts come from or how good they are. Almost all replacement parts are made in China or Mexico, and both countries are unhappy with the U.S. now. Personally, I'm not a fan of NAPA. I have seen high priced bad MOPAR branded parts.

Vehicle repair is all a crapshoot these days.

 

[Mowery]

What kind of code do you have?
But I wouldn't go that cheap. Or else you'll be doing the job again. Rock Auto has them for about 30$ each for good brands like NTK or Denso. I just replaced mine and haven't had an issue with them since.

It is code P0420, this time. Bank 1 CAT performance insufficient