Location of bank2 sensor help
- Thread starter mauidiver
- Start date
Register to hide this ad
BioHAzard050
New member
Bank 2 sensor 1 is closer to the engine, sensor 2 is after the cat. Make sure you get the right sensor for front or rear, different sensors (at least according to the computer at the auto parts store I work at.)
CAN-03runner
New member
check the pdf in post #9
http://www.toyota-4runner.org/maint...or-bank-1-sensor-2-p0136-code.html#post434805
Depends on your engine
If it's a P0430 that's the low efficiency cat code. So does the code also say bank2 sensor 2? That's the one after the cat if it's complaining about low efficiency of the cat converter
http://www.toyota-4runner.org/maint...or-bank-1-sensor-2-p0136-code.html#post434805
Depends on your engine
If it's a P0430 that's the low efficiency cat code. So does the code also say bank2 sensor 2? That's the one after the cat if it's complaining about low efficiency of the cat converter
Ok, brain fart here..I'm confusing myself. It's a P0430 Catalyst Efficency code (low B2) did not specify sensor 1 or 2....I have the DENSO 234-4805, so I'm still not 100% on if it's the one closer to engine, or to my face when I'm on ground looking up. Sorry guys, Rookie here.
SSt4r
New member
A/F (air/fuel) sensor is the forward one. o2 sensor is the rear.
I had replaced both on mine for the same code (Actually I had the code for both sides) & it didn't help; think I had ruined the cats.
I used this https://www.amazon.com/gp/product/B000W1XX4M/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 on the o2 sensor and have had no issues since.
I had replaced both on mine for the same code (Actually I had the code for both sides) & it didn't help; think I had ruined the cats.
I used this https://www.amazon.com/gp/product/B000W1XX4M/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 on the o2 sensor and have had no issues since.
DisguisedRope
New member
4 cylinder???
I unhooked battery for about 15-20 minutes, then drove about 10 miles or so, turned engine off, started back up and bang!! Check engine light and all other light lit up. Just at Autozone and pulled codes again and were the same as yesterday. Same song and dance, same codes, and tells me to change the sensors I already changed.
Attachments
I'm a professional!! Ha! Just noticed. You know what I mean....
That P2195 code doesn't necessarily always point to a bad O2 sensor. What it means is that the O2 sensor is telling the PCM that the mixture is continuously lean, and whatever the PCM is doing to fix that situation isn't working. Could be air getting into the exhaust system, a plugged injector, or a number of other things. Could also be a bad connection between the O2 sensor and the PCM. The O2 sensor puts out near 0V for a lean condition, and about 1 volt for a rich condition, so in your case the PCM thinks the voltage is stuck at 0V.
Longmark999
New member
4.7L V8 Bank 2 Sensor 1 Location
I just replaced this sensor on my 2003 4Runner (4.7L V8). I didn't snap any pictures or take any video, but I was "lucky" because the fender splash shield on my 4Runner was missing and I discovered that the Bank 2 Sensor 1 is easily accessible just by reaching over the passenger side tire. If you think of the tire as being a clock face, you would be reaching over it at about 10 O'clock. I didn't even buy the sensor wrench attachment, I just reached past the tire with an open ended wrench and was able to tap the sensor loose with a hammer. I soaked the sensor with Liquid Wrench a couple of days ahead of time and it came out with about 10 taps of the hammer to loosen the sensor then removed it with my hand. The only two things that were a little tricky were removing the old wire connector, which I accomplished with the use of a long slotted screwdriver to depress the tab on the housing and my other hand pulling on the wire to remove it. You're working blind on this since you've got both hands in a tight space. The other thing that was tough was hand threading the new O2 sensor since you're hand is in a tight spot and you have to align the sensor by feel. Counterintuitively, if you use your left hand to do this it is easier because your left hand allows you to turn the sensor more easily with your fingers. The whole job took about 40 minutes, and if it weren't for the stinking Houston heat (105 degrees in my garage!) I would rate it extremely easy. Oh, and I picked up a Denso sensor from Wal-Mart for $45 which was nice. Autozone and O'reillys wanted over $90 for the part. So if you're facing this job, rather than taking it to a shop, or putting it on a hoist or crawling under it, just remove the fender splash shield (mine was already missing) which is the shield that faces the back of the tire, not the shield above and around the tire, and approach the job from that access point. $45 and 40 minutes later and you'll have a new sensor in there. One other thing I did was to ensure that the wrench I was using was a tight fit (if you're not buying the sensor wrench attachment) by fitting it over the new, uninstalled sensor before I started the job. This helps to ensure you don't strip the old sensor when you're removing it.
Hope this helps.
I just replaced this sensor on my 2003 4Runner (4.7L V8). I didn't snap any pictures or take any video, but I was "lucky" because the fender splash shield on my 4Runner was missing and I discovered that the Bank 2 Sensor 1 is easily accessible just by reaching over the passenger side tire. If you think of the tire as being a clock face, you would be reaching over it at about 10 O'clock. I didn't even buy the sensor wrench attachment, I just reached past the tire with an open ended wrench and was able to tap the sensor loose with a hammer. I soaked the sensor with Liquid Wrench a couple of days ahead of time and it came out with about 10 taps of the hammer to loosen the sensor then removed it with my hand. The only two things that were a little tricky were removing the old wire connector, which I accomplished with the use of a long slotted screwdriver to depress the tab on the housing and my other hand pulling on the wire to remove it. You're working blind on this since you've got both hands in a tight space. The other thing that was tough was hand threading the new O2 sensor since you're hand is in a tight spot and you have to align the sensor by feel. Counterintuitively, if you use your left hand to do this it is easier because your left hand allows you to turn the sensor more easily with your fingers. The whole job took about 40 minutes, and if it weren't for the stinking Houston heat (105 degrees in my garage!) I would rate it extremely easy. Oh, and I picked up a Denso sensor from Wal-Mart for $45 which was nice. Autozone and O'reillys wanted over $90 for the part. So if you're facing this job, rather than taking it to a shop, or putting it on a hoist or crawling under it, just remove the fender splash shield (mine was already missing) which is the shield that faces the back of the tire, not the shield above and around the tire, and approach the job from that access point. $45 and 40 minutes later and you'll have a new sensor in there. One other thing I did was to ensure that the wrench I was using was a tight fit (if you're not buying the sensor wrench attachment) by fitting it over the new, uninstalled sensor before I started the job. This helps to ensure you don't strip the old sensor when you're removing it.
Hope this helps.
