What does the code P0420 mean on a Dodge Ram?
What does the code P0420 mean on a Dodge Ram? P0420 is a very common trouble code. This code number references a number that is given to you when you plug your Dodge Ram into a OBDII scanner. It doesn’t matter which model you have, this OBDII code has the same meaning for all of them (1996+) P0420 is a OBDII trouble code. The code technically stands for: What is the trouble code on a Dodge Ram? P0420 is a very common trouble code. This code number references a number that is given to you when you plug your Dodge...