98dirtybird

iTrader: (1)

I have the rear o2's deleted, and just changed the front o2's and i am still getting these codes, p0131 bank 1 sensor 1 low voltage and p0151 bank 2 sensor 1 low voltage, and this only happens at wot and the end of 1st or if i am on the freeway towards the end of 2nd. I have checked the wires for a good clean coonection and I dont see anything that would cause to short.
Thanks in advance.

Robert Shelton

iTrader: (2)

Just found your post after doing a search. Have you fixed the problem yet as I have the exact same one? Another post I found said to check the 20A engine sensor fuse which I am doing later today. I'll post back if it is bad.

98dirtybird

iTrader: (1)

I actually have had it come up again but not as often, I will also check the fuse. thnx.

Havok2

iTrader: (118)

update!!! pleasae!!!

98dirtybird

iTrader: (1)

I still have the problem, and would love to have somebody tell me whats wrong!

Havok2

iTrader: (118)

ttttttt

98dirtybird

iTrader: (1)

Its weird i cant seem to recreate the problem, my feelings are that it needs to be kinda cool out, second gear (a4), about 60 mph, then wot, at the shift into 3rd , ses comes on, aftera day or 2 lights goes off (if smooth driving). I going to remove my a/f gauge see if that is the problem,if continues then i will remove my 2 year old jet stage 1 module. still need to look for the 20a egine sensor fuse.

DropTopBird

iTrader: (17)

I have the exact same problem in my 00 A4. The only time it comes on is if I really slam it going on an onramp or something. Another odd thing is that it had the same codes showing twice. Any help would be greatly appreciated.

sobaka__79

iTrader: (1)

i changed my front o2s out today with whatever firestone uses. 100 miles later i noticed the torque converter unlock and some random misfires on the way down to baton rouge. my A/F gauge went off the chart lean (not wideband). longstory short,
its now throwing P0131 and P0151 for the front o2 having low voltage and running like ****.

i noticed on my diablo that my front o2 sensors where 0 most of the time, occasionally going to 700 mhz for a short time. my FT where crazy bad liek 20-50+

i belive our problem is the the combination of crappy o2's we used to replace OEM equipment and our less restrictive exhause setup making the front o2 fail to warm and switch properly, thereby foolin the A/f into thinking its lean and the PCM goes open loop and dumps 25-50% fueltrim making our gas mileage go down.

https://ls1tech.com/forums/showthrea...nsor+switching

1. is this assumption correct?

2. can you modify the 3 fin design ? how do you do that?

3. would a true wideband setup eliminate the front o2 for good?

i have slp longtubes, ORY on a full bolt on car.

98dirtybird

iTrader: (1)

i have once thrown, the converter code along with the o2 codes. but the car may be totaled so i will never know.

sobaka__79

iTrader: (1)

well, i put back in one orginal delco o2 sensor and it worked, so i replaced them with OEM ACDELCO o2 sensors with 6 fins, not the shitty 3 fin bosch. works fine

sooo moral of the story, dont replace the o2 sensors with anything but ACDELCO if you've got headers.