Hello all,
I currently have 2 discos. A 2000 and a 2001. The 2000 has anot issue with the wiring harness. I drove it a little too aggressively in the woods and I got the connectors for the O2 sensors post cat pulled loose by a branch. Now I am popping a code for the drivers side cat not functioning . Imthinking I have a short along the way but can't confirm. The question is will an engine wiring harness from a 2003 with SAI mesh with my 2000 disco with SAI.

 

Just take the sensor out n repair it

 

Follow wire from sensor to connector. Is the engine side wiring from connector damaged? Or is connector ripped apart and undamaged? Is connector damaged (engine side)? If damaged engine side, i would try splicing a junkyard pulled connector in replacement, before a whole harness. Of course, be sure to have another uncut harness available to use if splice fails. : )

 

It is damaged on the engine side. I followed the wires up to harness but failed to see any issue. Will follow to the ecm as time permits. It got yanked pretty hard so possibly the connection was lost. I have an extra wiring harness and may just do the swap for sake of not having spliced wires and keep the old one to repair and have a backup. Thanks for the help.