Po175
 

2000 K3500 7.4L
I have a PO175 code.
Looking through the possible causes, I found that the TPS and MAF could also cause the code.
I was wondering, if either the TPS or MAF were bad, wouldn't It trigger both PO175 and PO172?????
Why would only the PO175 come on????

Try reading this:

https://www.yourmechanic.com/article...-blake-griffin

in order to learn what all can cause a P0175 DTC before you decide that this part or that part is defective. Remember, a DTC tells you that there is a problem with a circuit or a system. It never tells you that this part or that part is defective. You have to do some testing and that is called diagnosing.

Good Luck!