O2 sensors?

[Snoball M3]

Been getting this code, replaced all 4 o2 senors(Bosch FCP Euro), had an exhaust leak (replaced donut gaskets), replaced battery (Duralast AGM) and cleared codes. Did find Bank 1 post cat senor connection with a corroded pin due to old sensor missing green gasket (pics included), water was trapped between the connections when replaced but was able remove most of the corrosion. Drove 100 miles to see if codes would clear after but keeps returning with these codes:
Is there a fuse for all 4 sensors? If so where is it located??

[Theodore]

In the past I experienced a similar situation and replacing the DCT wiring harness (which includes the wiring for the 2 post CAT O2 sensors) along with the replacing my leaking DCT mechatronics harness o-ring removed the errors for all 4 O2 sensors simultaneously I was experiencing.

[Snoball M3]

Originally Posted by Theodore

In the past I experienced a similar situation and replacing the DCT wiring harness (which includes the wiring for all 4 O2 sensors) along with the replacing my leaking DCT mechatronics harness o-ring removed the errors for all 4 O2 sensors simultaneously I was experiencing.

Did you DIY this yourself?? Sounds like a major pita....Did the codes immediately clear after?

[Theodore]

Yes to both, you can follow this DIY DCT mechatronics harness o-ring and the only step not shown is to disconnect the final connection point of the DCT/O2 sensor wiring harness from the relay box under the hood on the passenger side of the car which is self explanatory.

[Mr.Zisky]

Originally Posted by Theodore

In the past I experienced a similar situation and replacing the DCT wiring harness (which includes the wiring for all 4 O2 sensors) along with the replacing my leaking DCT mechatronics harness o-ring removed the errors for all 4 O2 sensors simultaneously I was experiencing.

That wiring harness has only 2 connectors for o2 sensors. As far as I remember pre-cat o2 sensors connectors are part of main engine harness and only 2 post-cat sensors are part of DCT harness, no?

[Theodore]

Originally Posted by Mr.Zisky

That wiring harness has only 2 connectors for o2 sensors. As far as I remember pre-cat o2 sensors connectors are part of main engine harness and only 2 post-cat sensors are part of DCT harness, no?

You are correct, I edited my original post.