P0430....Catalyst System Efficiency Below Threshold (Bank 2) I cannot answer other codes without model and make ...but looking at this code alone i would suspect you have a failed lamba sensor therefore i would advise you seek the help of a local garage recomended to you by a friend or neighbour Because the emmisions will be high causing polution that pedestrians will be breathing in .Plus the extra fuel your using is costing you money
SOURCE: running rough, no power misfiring
i had that problem once. when i got under half a tank of gas in the tank. What i did was i dumped one bottle of gas line deicer in the tank and i have never had it agian. you may have some water in the tank. from condasation or i have a stong feeling i got my water from the gas station. i was using the same station all the time. so i tryed another gas station and so far no more rough idleing which was caused by the water i think and i am getting better fuel milage to. i hope this helps.
SOURCE: 1997 lincoln town car 4.6 with a p0430 fault code
I will make an assumption here, we know what the root word means. This code was extracted from the computer by? What this is telling you one of 2 things: The Bank 2 oxygen sensor down stream of the catalytic converter (there are 2 converters, one for each bank of cylinders on the 4.6ltr engine) is bad and/or that the Bank 2 catalytic converter is no longer doing the job it was designed to do. Simply, Catalysts wear out. They are good for approx 100,000 miles (as required by Federal Law). Again, I assume that the reason the intake manifold was replaced was because it had a crack in one, or more, of the runners? (part that feeds the head of a manifold). It may have taken a while to find this as being the cause of why the car running incorrectly, maybe rough. This means, that during the time the car was being driven with the problem, the amount of unburned, or not within spec exhaust gases, coming off the side of the engine affected by the intake issue was higher than normal. This out of balance level of exhaust gases were being dumped into the converter on that side of the engine, thus causing the converter to have to run hotter, work harder, or even at the time the gas was being processed through, causing deposits to be formed in the converter, thus shortening it's life span. The Bank 1 side of the engine, apparently, did not have the issue and it's catalytic converter's life was not affected. I hope this makes sense to you.
SOURCE: I have a 1997 4x4 chevy pickup with a 5.0 vortec.
Have you checked for any codes? Is the check engine light on? If there is any codes it will give you an idea of what to look for.
SOURCE: I have a 2001 Jaguar S Type 3.0l that had a P0430
PO430 = Catalyst System Efficiency Below Threshold (Bank 2) You may still have a sensor fault in the combustion/injection system, You need to get this checked at a garage with the correct monitoring system for while the engine is running. Or take a gamble and change sensors. Hope this helps - good luck.
A code P0430 may mean that one or more of the following has happened:
First, inspect for exhaust leaks.
Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen sensor while you're at it.
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