Causes and Fixes Ford P0171 Code: System Too Lean (Bank 1)
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Causes and Fixes Ford P0171 Code: System Too Lean (Bank 1)
How to fix a Ford P0171 engine code: System Too Lean (Bank 1) A lean condition exists if the engine is getting more air than fuel in the cylinders. (Air/Fuel Ratio is off) P0171 Code is problematic code since it can be caused by several things. Ford vehicles with V6 or V8 engines, Bank-1 is on the Passenger side. A 4 Cylinder has only Bank-1 ...
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