BECOME A MEMBER
It is free to join!
I AGREE TO THE
BECOME A MEMBER
P Codes (powertrain)
P0400 - P0499
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
FOUND 159 RELATED QUESTIONS
P0420 Cat Converter
Trouble Code P0420
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?
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
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.
to post a reply.
2006 grand caravan 3 8l 72 000miles has a p0420 code catalyst efficency below threshold bank 1 would that be a up stream 02 sensor
2001 pontiac grand am 3 4l v6 p0420 catalytic efficiency bank 1 code was tripping every 15 miles after replacing the thermostat wh
P0420 Code After Head Replacement
Hello i have a 2000 camry with 4 cyl engine and ca emissions the car overheated due to broken water pump and i replaced the cylinde
Fuel Pump Replacement
Ask a Car Question. It's Free!
Fuel Pump Replacement Ford Mustang
Catalytic Converter Replacement Volkswagen
Need To Replace Your Fuel Injector? Do It Like a Pro
Camshaft Angle Sensor Replacement P0015
Crank Angle Sensor Replacement Mercedes Benz
Need To Replace A Mass Air Flow? Here Is How P0102
© 1999 - 2015 2CarPros, Inc.