no the primary one is the one closest to the engine
on the exhaust
in the car
These sensors are available on EBay for ~$70
Passenger side exhaust
It is caused by Bank 2 Sensor 2 oxygen sensor failing.
inside the exhaust and by dissasembling and swapping it out
gonna need more information before i can answer this one.
the oxygen sensor(s) on any car is gonna be screwed in the exhaust. the primary sensors are screwed in the exhaust manifolds. the secondary sensors are going to be screwed right before, in, or right after the catalytic converters. if your getting a check engine light, find out what code is in the computer and the definition. b1s1 means bank 1, sensor 1. bank1(or2) means which exhaust side, and sensor1(or 2) is the location of the sensor on that side. the side that has the number 1 spark plug is going to be bank 1.
18 Millimeter, 1.5 Pitch
12 mm
Let me know if you find out. i am having trouble locting which one is 1 and which is 2... I was told i needed to replace the #1 oxygen sensor
You need to a new oxygen sensor if you are getting a p1155 code on a 1998 Lexus. This means that heater circuit is malfunctioning.