Question

What do these codes mean, P0174, P0171, P0420, P0113 on my 2007 Dodge Charger 5.7L?

Answer 1

P0174 Fuel trim lean Bank 2

P0171 Fuel trim lean Bank 1

P0420 Catalytic below threshold Bank 1

P0113 Intake air temperature sensor circuit high input

Circuit high condition are sensor that are disconnected either at the sensor  or along its harnes which would be a open connection to even a failed sensor, Lean running condition are mostly caused by vacuum leaks, or low fuel pressure , when there is a fuel trim problem it causes the cataltyic to work improperly.

Answer 2

P0113 CHEVROLET Code - Intake Air Temperature Circuit High Input
Read more: https://www.autocodes.com/p0113_chevrolet.html

P0171 CHEVROLET Code - Fuel Trim System Lean Bank 1
Read more: https://www.autocodes.com/p0171_chevrolet.html

P0174 CHEVROLET Code - Fuel Trim System Lean Bank 2
Read more: https://www.autocodes.com/p0174_chevrolet.html

P0420 CHEVROLET Code - Catalyst System Low Efficiency Bank 1
Read more: https://www.autocodes.com/p0420_chevrolet.html