Code P0172 on 2000 Chevrolet S10

Code P0172 shows on the code reader (rich fuel in bank 1) replaced vacuum hoses/fuel filter/sparke plugs. still runs rough/same code of P0172. Any info appreciated.

Asked by for the 2000 Chevrolet S10
4 answers
Does your 2000 Chevrolet S10 have a 4 or 6 cylinder engine?
Don't have an answer but my 99 s-10 has same symptoms and I've replaced the same plus plug wires and also got a PCM code p1621 for memory. Let me know if you find an answer, please
air filter needs replace
Manifold absolute pressure sensor and throttle position sensor can also cause this code along with a failing fuel pressure regulator and leaking fuel injectors.