upstream (front) sensor (before catalytic converter)
P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
where is the oxygen sensor location on a 1998 explorer bank 2 sensor
location bank 1 sensor 1
Bank 1 is the same side as cylinder #1. Sensor 2 is after the catalytic converter.
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 (one) is the side in front of car (Bank 2 is rear, firewall side) 02 sensor 1 is upstream, on exhaust manifold (02 sensor 2 is downstream, by cat. conv.)
That would be the sensor after the catalytic converter.
That is the sensor in the catalytic converter.
before the cat , at the manifold
The bank without a number onc cylinder in it is bank number 2. Sensor 2 is behind the catalytic converter.
Bank 1 is the driver side.