2000-2005 Dodge & Plymouth Neons
1995-1999 Dodge & Plymouth Neons
Chemistry
Freshwater Aquariums

What is error p420 for a 2002 dodge neon?

414243

Answer

User Avatar
Wiki User
12/31/2006

Code P0420 is: Upstream catalytic conveter efficency below threshold. Bring your car to your Dodge dealer and have them fix it under warranty. A 2003 Dodge Neon has a 5 year 50,000 mile warranty on emissions!