A p0430 means that one or both of your oxygen sensors on Bank 2 is either, sensing that there is a problem with the catalyst system efficiency, -and/ or - the oxygen sensor is failing. It could also mean that there is an exhaust leak.
First, check for exhaust leaks.
Second, test the two oxygen sensors on bank 2. It is a good idea to just test all 4 oxygen sensors. If they pass ---check all the wiring and connectors associated with the oxygen sensors. Third, have an air flow test performed on both catalytic converters to determine which one (or both) may be not working.
If all of that fails we will move on to the fuel delivery side of things.
Tuesday, November 17th, 2009 AT 1:12 AM