My car stalls out somtimes when i stop.

Question

Check engine light came on code p0172

Answer 1

P0172 Fuel trim rich (Bank 1)

When it comes to rich running condition , this tends to be mechanical condition, we can rule that out first, Some of the cause that can cause a rich condition are plugged airfilter, a leaking fuel pressure regulator seeping fuel through the vacuum port. Try those area first.