98 Chysler Concorde Code P0432

It sounds like the largest catalytic converter is faulty and that could also mean the oxygen sensor that's by it is faulty.Just keep in mind it's best to change them both together but have a free exhaust check done and then go from there.By the way the oxygen sensor is the main cause of catalytic converter to fail it's because they cause them to run hotter then normal and burn out.
By the way it's a good idea to pick the catalytic converter up from a auto wreckers because their expensive new. Also theres 3 cars that are the same, your car , the eagle and the intrepid all have several parts the same on them. Buy a new oxygen sensor always. Bosch makes a real good replaced oxygen sensor by the way and their cheap.

I hope this is helpful to you!

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