The pic no longer exists, I even tried searching too. However, I found the pin outs for 02+ and can easily walk you through the mod. Here's the pin out.does anyone still have the original picture showing which wire to cut and which wire to splice that is the "free" repair to correct MIL P0161 for 2002 ? The picture link has seemed to expire and i cant find it anywhere.
On some OBD-II vehicles, the post-cat (S2) o2 sensors are indeed used for fine fuel trim corrections, not only for the cat monitoring. According to some sources, some Toyotas are affected.You can unplug both B1S2 and B2S2 with no problems or effect on performance besides a CEL. Those two sensors only monitor cat performance, that's it.
Old thread revival!!! Has this problem been fixed?? If so, how?Here's my problem: All sorts of codes (6 total...)
P0130 - B1S1 Sensor Circuit Malfunction
P0133 - B1S1 Sensor Circuit Slow Response
P0141 - B1S2 Heater Circuit Malfunction
P0150 - B2S1 Sensor Circuit Malfunction
P0153 - B2S1 Sensor Circuit Slow Response
P0161 - B2S2 Heater Circuit Malfunction
It seems to me like there's a pattern here - both upstream sensors show a malfunction and slow response. Both downstream sensors have a heater circuit malfunction... Could this be because of something else? The heaters have fuses, right? Does anyone know where they are on this car?
I don't want to replace 4 oxygen sensors if I don't have to. I got the car a year and a half ago, and it had O2 codes then (less, forget which ones), at 126k. It has 172k now, and the 6 codes. I'm just afraid replacing all 4 sensors is a waste if I don't have to... ya know?
Any help is appreciated!
You need to use an O2 sensor socket. It's a socket with a slot on the side for the wires to pass through. You can buy them at any auto parts store.How did you guys get b2s1 sensor out? Trying to do it with the socket seems inpossible. Do i need to use a wrench for that one?