Question about 1996 Chevrolet Astro
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: o2 sensors
The dealer would have that exact spec for your car. Do you have any friends who are in the auto repair business or that work at an Auto Dealership? The car you have is so new that there is no repair manual out yet to cover it. I have called Chevy Dealership Parts departments before to ask questions and it depends on the person on the other end of the line, as to weather they will give you the right info. Usually they will because it means they could sell you a part or some service work. Try calling and asking or even talking to a service writer or mechanic at a shop. You'd be suprised at what you might find out.
Posted on Jul 05, 2008
from what i am finding the code means o2 sensors. they recommend replacing them and if this does not work than replacing the cat converter
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
A code P0420 may mean that one or more of the following has happened:
Some suggested steps for troubleshooting a P0420 code include:
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Posted on Aug 20, 2009
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