I have two codes, the 401 for the EGR and 463 for the sending unit. I took some of the advice here and cleaned the the EGR with carb cleaner. Light is still on. I guess the question I have is, what if the needle still sticks on the valve? I soaked the EGR and left it for a few minutes. When I push the valve in with a pen it will stick and then once I give the valve a little shake the pin comes back down. Do i need to leave it soaking for longer or get a new valve.
Also with the sending unit code. My gas gauge reads fine so I am not sure there. If there are any other suggestions on the valve cleaning, please let me know. Thanks!
Dwayne