What steps do I take to repair or correct this code problem on my 2000 Chrysler 300 M. The code is P0172 as I need to do this ASAP to pass inspection.
P0172 Fuel system too rich
Fuel system too rich can mostly be caused by engine mechanical conditions , Because the 300m uses a speed density any vacuum leak will cause a rich running condition, check the MAP (manifold absolute pressure) sensor for proper vacuum connection,and also the air filter replace if needed.
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