p0420 code
p0420 code
it the p0420 code bank 1?
anyway i have a decated manifold 1 lambda and another connector spliced in.
i got remapped few week ago was fine after that came on a week or so after think just coincidence.
i have checked my wires so many times, i got a new lambda, still coming up
any ideas y and how to get rid of it?
i have a hi flow center cat, but bank 1 is pre cat? the ones on manifold?
car is running fine just dont want light on all time incase another error code comes up.
![[Image: 46032_548210708527052_942106859_n.jpg]](https://sphotos-d.ak.fbcdn.net/hphotos-ak-ash3/p206x206/46032_548210708527052_942106859_n.jpg)
lookatmybiceps
06-05-2019, 10:04 AM #1Hi guys i been getting this for weeks now!
it the p0420 code bank 1?
anyway i have a decated manifold 1 lambda and another connector spliced in.
i got remapped few week ago was fine after that came on a week or so after think just coincidence.
i have checked my wires so many times, i got a new lambda, still coming up
any ideas y and how to get rid of it?
i have a hi flow center cat, but bank 1 is pre cat? the ones on manifold?
car is running fine just dont want light on all time incase another error code comes up.
![[Image: LexuS-Copy.jpg]](http://i65.photobucket.com/albums/h204/Sparkystav/LexuS-Copy.jpg)
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
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Sparkystav
06-05-2019, 01:38 PM #2It's not just bank one. Is it sensor 2 or sensor 1?
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
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lookatmybiceps
08-05-2019, 04:28 AM #3ah ok i didnt see anything like sensor 1 or 2. what the diffrence? also im fully de-catted now if that guna make any diffrence? will get a code reader and check as fin coll now so cant use that.
What have you done with the 3rd O2 sensor? On the exhaust.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
08-05-2019, 05:00 AM #4Just checked and your right it's just banks.
What have you done with the 3rd O2 sensor? On the exhaust.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
found this wold this help?
http://www.nissanclub.com/forums/f-q-199...0-fix.html
i know it for another car but in theory kind if the same? a resistor on the 3rd 02sensor? or the 1st and 2nd or all 3?
or dose the lexus read it another way so this woldnt do anything?
lookatmybiceps
08-05-2019, 05:52 AM #5ah ok, 3rd o2 sensor is still in, bank 1 is the manifold sensors?
found this wold this help?
http://www.nissanclub.com/forums/f-q-199...0-fix.html
i know it for another car but in theory kind if the same? a resistor on the 3rd 02sensor? or the 1st and 2nd or all 3?
or dose the lexus read it another way so this woldnt do anything?
The sensor after the cat is bank 1 sensor 2 so technically bank 1 still.
You can try the resistor though not sure it'll work or not.
You have 2 options in my eyes, add a spacer to the O2 sensor so it sees less gas and hopefully should remove the light but it could come back now and again.
Or buy one of my O2 simulator boxes. You mount it in the engine bay, completely removes the need for the rear sensor (gives you a handy space for a wideband
) and the code won't come back.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
08-05-2019, 06:51 AM #6Never heard of the resistor before.
The sensor after the cat is bank 1 sensor 2 so technically bank 1 still.
You can try the resistor though not sure it'll work or not.
You have 2 options in my eyes, add a spacer to the O2 sensor so it sees less gas and hopefully should remove the light but it could come back now and again.
Or buy one of my O2 simulator boxes. You mount it in the engine bay, completely removes the need for the rear sensor (gives you a handy space for a wideband ) and the code won't come back.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
lookatmybiceps
08-05-2019, 06:58 AM #7ok well will give the resistor a try, i have a 90 adapter that i tried on the 3rd sensor and ecu light still came on. will try then if not how much your sensor boxes? and could it be used on the 1st and 2nd sensor on manifold so no actual lambdas? or not a good idea no lambda sensors?
The rear one is purely to check the cats working. Theyre £40 mate plus postage.
Stav
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
08-05-2019, 10:04 AM #8The lamba sensors control the fuelling so you can't remove them.
The rear one is purely to check the cats working. Theyre £40 mate plus postage.
Stav
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
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