Which oxygen sensor is this?

[Motorhead350]

P0153 comes up during warm weather.

Upon a test it tells me O2 1 works, but O2 2 does not.

I know sensor 2 is the sensor closer to the engine..
But is this the passenger or drivers sensor? P0153

Thank you in advance.

[ctrlraven]

That code is for Bank 2, Sensor 1.

Bank 1 is always the side of the engine where cylinder number 1 is located and, of course, Bank 2 is the opposite side.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Firing order is as follows: 1-3-7-2-6-5-4-8.

4 | 8
3 | 7
2 | 6
1 | 5
\/
Front of vehicle

So your code is for the DRIVER SIDE REAR O2 SENSOR.

[Motorhead350]

Thank you for this information.

[Ourobos]

^ Couldn't have described it better myself, nice.

[Pat]

This should be a sticky.

[RF Overlord]

Nice job, Birdman... :)

[cer0413]

That code is for Bank 2, Sensor 1.

Bank 1 is always the side of the engine where cylinder number 1 is located and, of course, Bank 2 is the opposite side.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Firing order is as follows: 1-3-7-2-6-5-4-8.

4 | 8
3 | 7
2 | 6
1 | 5
\/
Front of vehicle

So your code is for the DRIVER SIDE REAR O2 SENSOR.
Saving this in my mechanic notes. Thank you sir

[kirk]

Saving this in my mechanic notes. Thank you sir

+1........

[1stMerc]

+2 good info....