Error codes o2 sensors

[opihi5]

Got these codes when I scanned my car,
1) 2742 Lambda sensor heater resistance diagnostic VKAT bank 1
2) 2743 Lambda sensor heater resistance diagnostic VKAT bank 2

I know they are the o2 sensors but I'm not sure which ones to look at. Can someone explain to me the location and possible solution besides replacing.

Fully catless and evolve tune

[opihi5]

Going to buy two of these pre cat sensors. Will update if it fixes the problem
http://www.amazon.com/Bosch-17039-Ox...+Oxygen+Sensor

[JsL]

Originally Posted by opihi5

Going to buy two of these pre cat sensors. Will update if it fixes the problem
http://www.amazon.com/Bosch-17039-Ox...+Oxygen+Sensor

The O2 sensors you are replacing are the two closest to the headers (before your cat, if you had one)

Doesn't matter in your case since you got codes for both banks, but Bank 1 is passenger side and bank 2 is driver side.

[opihi5]

Originally Posted by JsL

The O2 sensors you are replacing are the two closest to the headers (before your cat, if you had one)

Doesn't matter in your case since you got codes for both banks, but Bank 1 is passenger side and bank 2 is driver side.

I think it was due to the twisting of wires