So after replacing my injector o-rings and clearing up all my lean codes I now have a P0135!
Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)

All my lean codes are gone and I swapped the O2 sensor for a good spare I had but I still have the code.

So I'm wondering is if any of you guys remember.
If the OS harness running to the O2 on the drivers side long enough that I may have pinched it under the coil mounting bracket and grounded one of the O2 heater wires when I put everything back together?

Or should I look elsewhere?

 

If memory serves, which it rarely does, the o2 branched off past the coils on the drivers side.

 

So I cleaned the connectors and checked continuity on all the wires running from the Bank 1 Sensor 1 plug to the the plug on the ECM.
Found no problems and none were grounded.
Pulled my spare O2 back off and checked the heater wires and only got 2 ohms across them just like the old one.
Everything I found on the internet said it should be 6 ohms.

So I bought a new Bosch O2 15175 direct fit.
Like a bonehead I didn't check the new one to confirm the 6 ohms before I put it in!

Drove it for a 1/2 hour and no codes popped up.
I did notice that it did flash "OL-fault" on my scanner when it switched to CL.
With the old O2's the OL-fault stayed up.
I'll need to get a few drive cycles on it to see if it is truly fixed.

Thanks