Hey dudes, pulled an error code off my Disco 2:

o2 Sensor Circuit Bank 2 Sensor 1

Failed Inspection for it.. Any idea which o2 sensor it is?

 

Pre-cat (front) sensor on right side

 

Front passenger? Any chance you can link the part?

 

You'll want two if these

Bosch 15175 Oxygen Sensor, OE Type Fitment https://www.amazon.com/dp/B0018R5SOW/ref=cm_sw_r_awd_iRLTvbDZ029NX

And two of these

Bosch 15630 Oxygen Sensor, OE Type Fitment https://www.amazon.com/dp/B000VASG5K/ref=cm_sw_r_awd_eSLTvb1KN6P2M

Always replace O2 sensors in pairs. Expensive, but worth it.

 

this would be a good time to reroute the front sensor wires, so the engine oil does not run down inside the connectors.

 

Bank - goes behind the engine Cylinder number.
Bank #1 is behind Cylinder #1.
Bank #2 is behind Cylinder #2

Put in new Bosch sensors from Amazon if you can.
No junk Chinese sensors.

 

Yep. Alex_M gave good advice. he is da man.

you can also try my lookup table for codes
http://enginecodemaster.com

just a PHP lookup table really.

 

I never understood the logic in replacing the downstream sensors when upstream sensors are replaced. If one upstream sensor fails, sure, replace the other upstream, but why bother with the downstream? The only thing they do is monitor the converter. The have absolutely nothing to do with fuel management. I replaced both upstream at 100k not because they were bad, but because I figured they were switching slower than new. Downstreams are still original at 150k. If I get a code for one, I will replace it then.

 

Hi,

Sorry but I'm new to this.

Does anyone know which is my o2 sensor Bank 2 sensor 1 on my 2001 discovery 2 V8 UK spec so drivers side is on the right.

Thanks.

 

Bank 1 - Driver
Bank 2 - Passenger
Sensor 1 - Upstream before cat
Sensor 2 - Downstream after cat