Why do I keep getting a code 172

Question

After maybe a mile of driving check engine light comes on and I get a code 172 and three 334 I just put a new O2 sensor in and a new EGR valve position sensor and the EGR vacuum control solenoid the truck also has a fresh complete tune-up new fuel filter new air filter and a new coolant temperature sending unit

Answer 1

Hi there

This code indicates a rich fuel mixture on bank1. A leaking fuel injector could cause this code. Here is a list of other possible causes.

P0172 FORD - System Too Rich Bank 1

Read more: https://www.autocodes.com/p0172_ford.html