Ford P0171-System Too Lean Bank 1

Ford-P0171

Ford P0171 System Too Lean Bank 1 Code P0171 Ford is DTC code stored in ECM(engine control module)when it detect lean condition in the fuel system Bank 1. This condition occurs when there is too much air and insufficient amount of fuel in the air/fuel mixture. Engine control module (ECM) monitor air/fuel mixture ratio using … Read more