I'm having an issue with my 2000 Volvo S70 GLT. The car is shaking very bad when put in drive. At first it seemed like a bad misfire, although the car runs smooth in park/neutral. The 3 codes that are showing are listed below. I'm thinking a bad oxygen sensors could be causing this?

P0455
P0422
P0014

What would be causing the car to shake so violently in gear but not neutral? The last major repair I did was the timing belt, although that was around 7,000 miles ago (at least).

Any help would be greatly appreciated!