Read some posts that suggested changing out EGR sensor, to correct a p0402 code that I had in my previous post, so that is what I did. After doing so I now have an error code p1401 EGR EVP sensor circuit high voltage detected. Also showing P0171 System too lean bank 1 and P0174 System too lean bank 2. Anybody got anything?

...I now have an error code p1401 EGR EVP sensor circuit high voltage detected.
Actually, P1401 is "DPFE output circuit high". Replace the DPFE.

Also showing P0171 System too lean bank 1 and P0174 System too lean bank 2.
Most frequently caused by one of more vacuum leaks.