got a P0420 code

Reply Subscribe

Thread Tools

Search this Thread

01-04-2012, 11:39 AM

poorstang

Seasoned Member

Thread Starter

Join Date: Jan 2011

Location: Richlands VA

Posts: 435

Likes: 0

Received 0 Likes on 0 Posts

Year: 1997

Model: Cherokee

Engine: 4.0

got a P0420 code

Looked it up and it is saying the cat is bad is this the real problem or is it just a generic solution. I ask cause the po put a new cat on around the time i bought the xj. Its a 97 sport with 162388 miles

Reply Like

01-04-2012, 11:59 AM

sportrider

Senior Member

Join Date: Aug 2009

Location: Pueblo, CO.

Posts: 903

Likes: 0

Received 1 Like on 1 Post

Year: 1999

Model: Cherokee

Engine: 4.0

if your cat was replaced with a universal cat that is not OBD2 compliant it will throw a cat code.

Reply Like

01-04-2012, 12:09 PM

poorstang

Seasoned Member

Thread Starter

Join Date: Jan 2011

Location: Richlands VA

Posts: 435

Likes: 0

Received 0 Likes on 0 Posts

Year: 1997

Model: Cherokee

Engine: 4.0

It has been on there for 50000 miles or so with no codes till now

Reply Like

01-04-2012, 12:09 PM

tjwalker

CF Veteran

Join Date: Nov 2010

Location: In the middle of Minnesota!

Posts: 5,804

Likes: 112

Received 99 Likes on 88 Posts

Year: 1999

Model: Cherokee

Engine: 4.0

Couple of links applicable to the P0420. Always GOOGLE the code for information (for instance, Google P0420 + Jeep)

http://www.obd-codes.com/p0420

http://www.aa1car.com/library/p0420_dtc.htm