Need component $01 identification for mode 6 module $D1 tests $11, $19, $1A?

It is best to go to the manufacturer's technical web site and look under the technical sections for the translations of the hexadecimal values for your specific vehicle. Dodge may charge you for this info, I don't have it, as I would have to pay to log in as well. If your car passed all the monitors, then you are good to go. If your idle air valve is defective and your are sure of that, then by all means, replace it. As for your fuel economy, look at your fuel trim. Is it rich or lean? When you say bad fuel economy, could you be more specific? How many miles on your vehicle? I would check to make sure your timing chain is not too stretched, as retarded timing will kill your mileage BIG TIME! Do a base line timing inspection. It can be done even though your 5.9 has its timing controlled by the computer. Feel free to ask more questions. Dan