chongmcho

It could be 02 sensor.The sensor is part of the emissions control system and feeds data to the­ engine management computer. The goal of the sensor is to help the engine run as efficiently as possible and also to produce as few emissions as possible.Try to swap your o2 sensors from left to right and right to left then clear the code and see if there's any change.

Before the cat o2 sensors are not the same. After the cat are the same. Do you really think that might be the problem with my o2 sensors before cat.

First post to the Board, thanks in advance...

I have a 2001 Boxster that just gave me a check engine light. I took it to Autozone and an isolated P0430 error code popped up. I have no other problems with the car, perhaps a minimal occasional rough idle. I read all there is on multiple boards on this error, and it seems the consensus is that the O2 sensors are fine and that it is an isolated catalytic converter issue. Now, I have several questions:

1) Could this still be an O2 sensor problem? I have yet to reset the code, and will see if it comes back. If so, should I even bother to change them? It seems that they have a life-span of 30,000 miles? Is this what most people experience?

2) If it does end up being the cats, do I replace both of them, or it usually one or the other? That is do I change both the primary and secondary cats?

3) Has anyone had experience with used cats? I priced them and there are FAR more reasonable than new.

I have similar problem. I was getting P1126 and P1133 and P107. I repaced both o2 sensors afterr cat nad MAF then my error went away. I drove a bout 50 miles then trying to get the inspection but it was ready yet. I drove about 125 mile I got new error code p0430. Do you really thins it was bad cat. Should Icange the both o2 sensors before cat as well.

First post to the Board, thanks in advance...

I have a 2001 Boxster that just gave me a check engine light. I took it to Autozone and an isolated P0430 error code popped up. I have no other problems with the car, perhaps a minimal occasional rough idle. I read all there is on multiple boards on this error, and it seems the consensus is that the O2 sensors are fine and that it is an isolated catalytic converter issue. Now, I have several questions:

1) Could this still be an O2 sensor problem? I have yet to reset the code, and will see if it comes back. If so, should I even bother to change them? It seems that they have a life-span of 30,000 miles? Is this what most people experience?

2) If it does end up being the cats, do I replace both of them, or it usually one or the other? That is do I change both the primary and secondary cats?

3) Has anyone had experience with used cats? I priced them and there are FAR more reasonable than new.

I have BoxsterS 2001 and getting an error code p0430. I aready changed the os sensors both after cat and MAF. Please let me know how to fix this error so I can pass my inspection. Thanks.