Place a large skillet over medium-high heat and add the vegetable oil.
Once hot, add the sausage links and let sear for 3 minutes.
Flip the sausages and add the peppers, onion and minced garlic; let cook for 3 minutes.
Add 1/2 cup of water and cover with the lid; let simmer for 10-12 minutes, or until the internal temperature of the sausage reaches 160℉.
Remove the sausages to a cutting board.
Add the remaining water, drained tomatoes, tomato sauce, sugar, salt, pepper and pasta to the large skillet with the peppers and onions.
Cover and bring to a boil.
Cook for 15 minutes, stirring occasionally, until the pasta is tender.
Slice the sausages and stir into the pasta.
Serve warm with parmesan cheese, if desired.