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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 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.
back 2
That is the pre - cat 02 oxygen sensor.
Bank 1 sensor 3 should be the one after the catalytic converter.
Same side as cylinder #1, third O2 sensor from the front.
The o2 sensor being referenced is located in the front end of the car underneath the cover with caution hand on it, the bank 2 o2 sensor is located behind the engine just before the catalytic converter.
The 02 sensor is located on the passenger side closest to the front passenger door and is mounted inside a metal housing. The sensor is screwed in from the passenger side.
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)