Question about Hyundai Elantra
P0420 is cat below efficency have you checked the cat to see if your emissions are in spec ? if they are it could be the rear lambda is not working correctly
Posted on Dec 29, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 11, 2011 | 2000 Cadillac DeVille
Dec 02, 2010 | 2000 Chevrolet Malibu
Mar 24, 2010 | 2002 Nissan Altima
Jan 16, 2010 | 2005 Nissan Altima
Dec 13, 2009 | 2001 Saturn L-Series
Sep 02, 2009 | 2002 Toyota Camry
Aug 25, 2009 | 2002 Toyota Camry
May 29, 2009 | 2000 Chrysler Concorde
Feb 02, 2009 | 2003 Toyota Corolla
Jun 29, 2008 | 2005 Cadillac CTS
May 23, 2017 | Hyundai Cars & Trucks
669 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: