2008 chevy impala V6 3.5 liter engine

Question

I do not see any results for my car. the code it is giving is P0172

Answer 1

P0172 Fuel trim system rich

Running rich condition are when you are using more fuel to the air to fuel ratio. Check the basic first such as the condition of the air filter, repalce if needed. When a engine has a rich code condition this is more of a mechanical condition . where more fuel is given than what is required. Check to see if there are other codes that may be set with this code condition. Do a MAF (mass air flow) cleaning see if that helps Here is a airfilter where a rodent has made a nest, condition like this set rich fuel trim codes condition