Yes it did.
Let a professional do this. You save very little by DIY.
2
There are not two catalytic converters. Working towards the muffler from the flange, you have a RESONATOR, a CATALYTIC CONVERTER and finally a MUFFLER.
No
At the rear of the engine and the second one is in the middle infront of the muffler
bank 2 is the drivers side of the engine , and sensor 1 is near the engine before the exhaust passes through the catalytic converter , sensor 2 is after the catalytic converter
Check to see that your catalytic converter is not full. Otherwise get your engine tuned up.
drivers side of engine , downstream from catalytic converter
On a V6 or V8 engine, the passenger side cylinders are bank one, so the catalytic converter on the passenger side will be bank one. The driver's side is bank two.
you can buy a used one from a salvage yard or elsewhere that sells used parts, just make sure the honeycomb inside it isn't blocked or crumbling. $1200.00 is probably to have the shop replace it and you would definetly be better off if you knew how to do the work yourself, because you would only have to buy the part and not the mechanics' time as well.
Catalytic converter efficiency failure.