CODE INFORMATION

Pontiac

Tiny

pitax1

March, 22, 2007 AT 11:56 AM

I have a 98 pontiac thansport, it has a p0420 code
i cant figure out what I would look for in the #1 bank
doug

FOUND 159 RELATED QUESTIONS

P0420 Cat Converter

10 ANSWERS
2 IMAGES

3 Answers

Tiny

Service Writer

March, 22, 2007 AT 6:50 PM

It has to do with the converter not being perceived as efiecient enough. Has the converter been replaced?

Tiny

pitax1

March, 23, 2007 AT 10:54 AM

Yes about a year ago.
There is only one converter so why wouldnt both banks have a problem

Tiny

Service Writer

March, 23, 2007 AT 5:56 PM

If I could give you an intelligent answer on that I would. One possiblitly is a leak on that side that is allowing the exhaust gases to be altered. That will throw this code.

The code you show, suggests that if a converter was replace with one the varies from the original, such as a universal, the code will be thrown for that as well.

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