New to the Santa Fe's
The following ABS codes popped up, was hoping to get some help solving these here.
C1203 Wheel sensor open or shut
C2112 Main Relay or Fuse
C1604 ECU Hardware error

I replaced both front wheel speed sensors(yep, they were stuck) and no change.
Are these some common issues that creep up on these trucks? any common fix's? Shop mentioned replacing the ECU but could cost $1k or more

2001 Santa Fe GLS w/ 2.7 v6 AWD 101k mi
Any guidance would be appreciated

 

What was the original problem that caused you to check for codes?

 

ABS and Traction control lights

 

After doing all the work,
Did you clear the codes and see which ones return , if any?

 

I did clear the codes, same ones came back .
I read another post that said the ABS unit can trigger the ECU Hardware C1604 light. Any experience with that?

 

The C1604 is directing you to the power steering system, possibly involving a torque sensor.

Your best bet is to have a qualified shop with the info and equip to do what must be done.

Guessing can get expensive and disappointing.

 

the previous owner did say they replaced the pwr steering pump. By torque sensor do you mean Steering Angle sensor?
I did have a mechanic scan it first, he mentioned the code could be to replace the ECU or the ABS control unit(HECU)
Anyone else come across this?

 

When someone says it could be this or that , they are guessing and that can get more expensive than having a qualified shop handle the job of diagnosis and cause.

 

Understanding all that, is there any guidance you have on this issue?
Anyone have experience with this issue, I have read many come across it but have not seen solutions posted?

 

This is more than you are equipped to handle.
You don't have the tools to correctly diagnose the problem and I have some reservations about the shop you are using.

As suggested earlier, consider taking it to a dealership. They should have all the necessary info, and tools to do what is necessary to correct this.

I can understand trying to find an easier solution, but there is none. There are times we just have to do what is required.