O2 sensor issues

Does anybody know where to get inexpensive o2 sensors upstream and downstream that won't empty my bank account or can old ones be repaired bought 2 on ebay that were bad 2003 tacoma prerunner 3.4L extended cab 2wd

 

Welcome aboard Kevin
Don't waste your money on cheap counterfeit knock offs.
Denso identical to original replacement or you're asking for more problems.

 

The only problem is i just cant simply afford 250 dollar sensors but if i dont get that check engine to stay off i have no way of knowing if something else goes wrong down the road while that idiot light is always on

 

An OBDII scan tool solves the not knowing something else issue for le$$

 

Got one of those already but that would be a pain in the ass checking that every single day just to see if another code popped up

 

What code(s) do you have?

 

Started with 0031 then when i changed the first sensor it changed to 2238

 

If you feel up to checking it out.
https://www.tacomaworld.com/threads/help-with-check-engine-light-code-p2238.514066/#post-16202207

 

I guess you have physical problem making it hard to plug the code reader in it is a pain having to remove the seat.

Since Napa started selling Denso I buy O2 sensors there the delivery women is very friendly .

For what ever reason Toyota`s don`t like Aftermarket sensors

 

Buy Denso on Amazon. Just figure out the part number you need. Ideally an obd2 scanner with live data so you can check the voltage of O2 sensors and what not to see if they are functioning correctly. Not too savy on that, just what I’ve heard while researching how to solve my P0420 code.

 

RockAuto has DENSO O2 sensors for much less than you quote.
I changed out mine and it solved the problem.
Good luck getting the bolt nuts off.

 

Use this site to look up the correct Denso part numbers for your upstream and downstream sensors and then buy them from Amazon: https://densoautoparts.com/find-my-part.aspx

 

I believe those codes are related to the heating element in the O2 sensor. It's possible that a non-Denso part has a different resistance in the heating element so the computer is seeing an out of spec current draw. Or if you use the wrong Denso O2 sensor.

It could also be a wiring problem, so you want to check that too.

 

Only use Denso sensors on these trucks, anything else might be cheaper but you'll pay more in the long run when they constantly crap out.

 

I still got a stock oem downstream sensor that worked great for me if you want it and will pay for the shipping. Replaced it with a new denso sensor a few months ago just doing upgrades. 200K on it but hey it's cheaper than new. From a 1995.5 5vzfe

 

Denso from rock auto.