Trouble code P420 TWC
Thread Starter
|
Junior Member
Joined: Dec 2019
Posts: 3
Trouble code P420 TWC
Can anyone help me with this code I have a 2001 DeVille and the check engine light is on, when I connected my code reader the code P420 appeared, in the Haynes manual it shows the initials TW with the P420, I was wondering what that stood for. Thanks in advance to anyone that can help....JohnB
Thread
Thread Starter
Forum
Replies
Last Post