P0031, P0102, P0A2C Codes 2011

Well, gf's neighbor who has been ridiculously ripped off by the stealership asked if he could borrow my tire pump.

I asked how the 2011 has been doing and he noted not good and the insane debt he owes on that car, albeit finally the engine and many other parts were replaced either under warranty or at expense.

I mentioned I can read the codes as I last recall him asking about where to get a MAF sensor as needed due to misfire per the stealership. Turned out they were wrong and they had to replace the EGR Valve to eliminate the misfire situation. Anyhow, last they told him was he needed a new harness and they'd do for $12K along with the other work.

What!?!?!? Read the codes and they came back with 215'C for P0A2C (reads like harness or connector related) and similar for the P0102. I didn't read into the troubleshooting steps for the P0031. We did check fuses and found the 10A EFI No.2 fuse blown.

I found the closest post noted that "... they found that one of the Bank 1 Sensor 2 - O2 Sensor wiring was causing the Short, as it was hanging very close or against the Heatshield."

We're all busy, though was wondering if anyone had a quick access and could post or had a reference to the wiring diagram of the engine area above. Also, maybe any quick check common locations where issues arise similar or same after swapping engine, replacing head gasket or in general. I think the troubleshooting steps detail enough, though wouldn't hurt for reference. $12k, though wow... though I see ~$3-4K for the harness alone from the stealerships all for tracing a short to ground reads like?

 

Humorous is similarly, the fuse is almost blown or blown enough. Reads 171'ish ohms since replaced and he drove around. I need to dig up some really long wires to make multimeter leads or determine where I placed the never used circuit probe electrical system tester tool that looks right for this.