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View Full Version : Catalyst effifieccy below threshold bank 1


jim821bo
Aug 21, 2009, 12:58 PM
I have change the 02 sensor and still get that code. What else could it be?

kitch428
Aug 21, 2009, 08:17 PM
Jim, check this out.

https://www.askmehelpdesk.com/cars-trucks/when-asking-about-your-vehicle-303903.html

itsjb5
Aug 29, 2009, 08:57 PM
It is telling you the cat converters are not doing there job... they need to be replaced. What year of car,truck? May be coverd under emission warranty 6year 60k. 8y 80 k..?