Bank one is the side of the engine with cylinder #1.
Sensor two is after the catalytic converter.
Bank 1 sensor 1 was the upstream 02 sensor located before the catalytic con on my 03.
Bank one is the side of the engine with cylinder #1. Sensor two is after the catalytic converter.
Bank 1 is the bank of the engine that contains #1 cylinder. Bank 2 is the other bank. Sensor 1 is located before the catalytic converter. Sensor 2 is located after the cat converter.
Same side as cylinder #1, third O2 sensor from the front.
That is the pre - cat 02 oxygen sensor.
Bank 1 sensor 3 should be the one after the catalytic converter.
Bank 2 locates on the opposite side of the cylinder # 1 and the sensor 1 is locates in the front
It is the first O2 sensor on the passenger side before the catalytic converter
P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
the 02 sensors are located in the exhaust system. bank one stands for the same side as the number 1 cylinder. sensor 1 is the first sensor in the bank, (closest to the engine or upstream) Bank 1, Sensor 1 is on the right side of the engine (fire wall side) before the cat.
its on the passenger side rear one.
location bank 1 sensor 1