1996 Honda Civic OBDII DTC P0420 for a 96 Honda Civic LX

1996 HONDA CIVIC
196,000 MILES • 4 CYL • FWD • AUTOMATIC
Avatar
TIGAPERBYU6
  • MEMBER
  • 1 POST
Hi Guys,
I'm new to this forum and I need some expert advice. A friend of mine was kind enough to lend me his EZ Scan 6000 so I can check the reason behind this light. It detected a "P0420 Catalyst System Efficiency Below Threshold (Bank 1)". I did change the entire catalytic converter about 2 to 3 years ago and now this. This car is due for smog in June & I have a feeling it will fail unless I can find a fix.....I need all the help I can get at this point. Thanks in advance!
Apr 18, 2009 at 10:57 PM
Advertisement
Avatar
F4I_GUY
  • ✓ASE Certified Mechanic
  • 3,302 POSTS
  • ASE Certified Mechanic
http://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

Here is an excellent link that will answer all your questions.
Apr 19, 2009 at 4:56 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.