This is resistance between pin 3 and 4 on all 4 O2 connectors. So between singal wire and ground.
I would doubt that they are all equally screwed...
Maybe someone can take a measurement on a car without errors?
Or maybe I should go back and measure resistance between pins connector X6002 and each wire at O2 connector, to see if there are any shorts?
I guess all 4 wires should not be making any connections unless connected to the DME. So it wires are different, resistance should be infinite?