TheHun

So it is a 2002WS6 M6 with 37000 miles on it. Just bought a month ago.
There's some mods: SLP long tubes, no cats, cutout, predator custom tune,rear O2 sensors disconected, probably a mild cam (I was told) and maybe some other thing what I did not find yet and a tube is missing on the driver's side what should come out from the airbox (by the ABS pump) anybody knows why it is removed?

My questions are;
SES light was on the code was P0135 O2S Heater Circuit, Bank1- Sensor 1, Malfunction.
Well I switched the rear O2 sensor with the front one on the driver's side
but after a couple of miles the SES light was on again.
And the new trouble code is;
P1133 HO2S Insufficie-Ent Switching Bank 1 Sensor 1
My next move was switching the passanger side rear O2 sensor with the front driver's side.
Next thing the SES light on P1133 HO2S code.

Now what. Is it still the O2 sensor (I'm ready to buy a new one I just tried to save by switching them you know the others might be good)
or the problem might be something else???

Tommy

glennhl

I've been throwing the 1133 on the driver's side and can't seem to get rid of it after my header install. I was getting 1133 and 1153 (passenger side) at first but the 1153 went away when I replaced both front O2 sensors with new Denso sensors. I've been told that any kind of leak on the headers or at the collector can cause the 1133 or 1153. I've tried everything and I think I'll turn it off with HPtuner.

TheHun

My car JERKS sometimes when the SES on sometimes the SES light flashes.
JERKS= something ain't no good
JERKS= air/ fuel mixture ain't no cool
I guess it should be the damned O2 sensor.
But I'm just guessing. That's why I'm here couse I need an answear.

Tommy

ELS1

same problem happen to me...it wasnt a bad o2 sensor, it was a cut o2 extension wire..and when i rain it shorted out. try inspecting them

pphilli1

iTrader: (1)

I Have Also Had The 1153 & The 1133 Codes Shortly After Installing Headers
& Removing The Cats.i Have Replaced Both Front O2s But The 1133 Code Still Comes Back After 20 Miles Or So.this Has Been Happening For About
Two Weeks Now.i Think I'll Check The 02 Wires For Any Loose Connections Or Bad Ground.however,if Any One Has Any Suggestions,i Would Greatly Appreciate Them.

Gloveperson

iTrader: (9)

Have your cars been tuned? If not, then the computer for some reason might be going nuts even with the 02 sims in there.

-Todd

DaddySS

Make sure you have no leaks, be sure the wires aren't damaged, be sure they are clear so air can get in through the wire harness, be patient and check thoroughly, you'll get it figured out. I have also found that new headers damage the sensors from either the coating on the headers burning off, or some other contaminent.

Bill Bowling

iTrader: (6)

A lot of us have this code after LT's. Sometimes you can replace the O2 but this does not always correct the problem. See thread for some other people having the same code:

https://ls1tech.com/forums/showt...057#post1769057

I read another thread that said replacing the O2 with a rear vet one did not fix the problem. I took mine out and cleaned the O2 and that helped for a couple of months before it came back. Right now I have a new O2 on that side right now. I am not sure how long this one will last.
Good luck.

Bill