Universal O2 sensor?

I was diagnosing a 2003 Toyota Tacoma PreRunner 3.4L V6. The original codes were p0031 and p2238. Well sensor 1 bank 1 seemed to be at fault so I replaced it with a Denso universal 02 sensor. I had to splice the wires onto the original connector. The colors of the wires on the connector were hooked up to the same color wires on the sensor. I get the codes erased and the CEL lights up seconds later with just the p0031 code.

The CEL is still lit up with the p0031 code. Is it still malfunctioning because I used a universal sensor instead of a factory replacement?? What else should I test??

 

someone else will probably be able to help you a bit more , i had the same issue with a ford ranger i used to have and wouldn't clear until i got the factory sensor

 

Gen 1 Tacoma's seem very picky about their O2 sensors. General advice seems to be OEM only.

 

So the exact same sensor.. same part number. So much for saving a few bucks :/

 

You get what you pay for.

Here is where I got mine: www.Rockauto.com

Denso OEM direct replacements

2344189 -- $53.79 Downstream
2349001 -- $94.79 Upstream

The included gaskets weren't the best so I got those separate as well (extra $2)

 

Universal sensors never work on 2.4l/2.7l/3.4l Tacomas..I've never heard of one working.


OEM replacement all the way(Denso)..don't buy BOSCH..it won't work!!!!

 

I bought a Denso universal. I had to splice my wires onto the factory connector. Hey that RockAuto price doesn't seem so bad. I didn't find that price when I looked. I'll look again