Hello I have a 2007 f150 5.4 fx4 that's showing 0 volts for bank 1 sensor 2 o2 sensor. I have checked the wires and I do have ground and 2 12v wires. I'm thinking something got pulled on when I did the cats and I'm about to start tracing wires and have found some diagrams showing its the grey/red wire. Does anyone know which it would be on the connector at the ecm? I'm thinking it might be number 43 in the attached picture I found in this forum but not completely sure since shouldn't there be 2 signal returns? Thanks in advance.

to the ecm

 

Subbed. I’m having issues with my bank 2 sensor 2 oxygen sensor

 

Refer to page 24-5. Grey/Red is the signal return to pin 43 on connector C175T. Pin 43 is the signal return for six components originating at Splice point S141 and includes the O2 sensors

 

Rolandtd

It’s been a few days since you last posted. Have you resolved this issue and if so, please post the solution? Feedback is important so that we all learn solution paths to these issues.

Thanks in advance

Jimboy

 

I unplugged the harness at the ecm and checked everything. When I replugged it started working properly. Could hasn't has a loose connection