Code P0171 Definition Bank 1 has too much air or not enough fuel. What Does P0171 Mean? Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean...
Code P0430 Definition Catalyst system efficiency below threshold (Bank 2). What Does P0430 Mean? The function of the catalytic converter is to break down harmful pollutants that are created by your vehicle during the combustion cycle and convert them into less harmful gases. Code P0430 indicates that the catalytic converter is not functioning efficiently, therefore...
Code P0420 Definition Catalyst system efficiency below threshold (Bank 1). What Does P0420 Mean? The function of the catalytic converter is to break down harmful pollutants that are created by your vehicle during the combustion cycle and convert them into less harmful gases. Code P0420 indicates that the catalytic converter is not functioning efficiently, therefore...
