P0171 is a diagnostic trouble code that means the engine’s air-to-fuel mixture on Bank 1 is too lean, with too much air relative to the amount of fuel being delivered. The most common cause is a ...

Hello. I've had an ongoing problem with my 2008 Corvette for over a year. I have reoccurring fault codes of P0171 and P0174, fuel trim lean on bank one and two. I have had the car to four shops and ...

Fault code PO171 usually indicates a lean air:fuel mixture entering the engine. As in there’s too much air and not enough fuel. This creates all sort of problems including poor running, but it could ...

Ever been told your car is running lean? It means the engine is receiving too much air or not enough fuel during combustion. You see, your car's engine needs a very specific balance of air and fuel to ...