Which tool for O2 Sensor replacement: 2006 V6 Tacoma

Hi All! I was able to replace 3 of the 4 Oxygen Sensors, but the last one , Bank 1 Sensor 1 (passenger side , most forward) is somewhat blocked and I can’t get any leverage to loosen and replace it.

Does anyone have a tool they recommend or, is there another method I haven’t learned yet?

Second question: I’m also getting codes for both Bank 2, Sensors 1&2 even though I replaced those already.

Any help or wisdom in getting this final fixed would be greatly appreciated.

Thanks!

Chochi

 

Havnt done that job so can't say what wrench you need. Try a O2 wrench?

If you are getting codes from both sensors after you changed them, then the problem is up stream. Air filter disgusting? Plugs ever been changed? Clean the maf? Vacuum leak?

 

What are the codes?
No need throwing parts at it yet.

 

Thanks for the reply’s. I will clean the MAF and the Throttle Body. I changed the plugs about 4-5 years ago.

The codes are: P0037, P0051, P0057.

I have the proper Offset O2 Sensor Wrench but unable to get the last one to move because it’s very difficult to find an angle to get any leverage and, the sensor is in there tight! I tried putting some penetrating oil in there but it hasn’t loosened up.