CEL p0132 and p0420

AceGuy · Jan 31, 2016

So I'm experiencing some confusion with my 2001 Ram 5.9. I'm pulling two codes one upstream O2 and a Catalyst fail code (down stream O2). And I can't seem to find my downstream sensor, but I've found the two upstream. So I was wondering if any one can tell me where it is. Also this truck is California emission.

dapepper9 · Feb 1, 2016

Does it day which bank the upstream sensor is? Also i believe those trucks sound have 3? Iirc

dapepper9 · Feb 1, 2016

Have you done your plenum? If you haven't you're prob burning a sight bit of oil and it's starting to clog your cat

AceGuy · Feb 1, 2016

The gasket seems to be fine and the truck runs great. The sensors have never been changed out and the truck has 260000 miles on her so I'm guessing it's the sensors or the cat but I'm not sure

dapepper9 · Feb 1, 2016

AceGuy said:
The gasket seems to be fine and the truck runs great. The sensors have never been changed out and the truck has 260000 miles on her so I'm guessing it's the sensors or the cat but I'm not sure

Are you sure about that? 260k there's a very very good chance it's blown. Not a guarantee, especially if it's been fixed before, but if not very likely. One thing you can do is knock on the cat with a rubber mallet and listen for stuff rattling around. If there's some rattling, start the truck and see if codes go away. Chances are good that you might need new sensors and if the codes stay new cat as well

CEL p0132 and p0420

AceGuy

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