Once hot add the oil to the pan. Add onions, celery, bell pepper and sausage. Cook for 4-5 minutes until the veggies are soft and the sausage is browned.
Mix in garlic and cook for 1 minute
Add all of the remaining ingredients, except for the shrimp. Stir to combine. Cover and seal the instant pot.
Set Instant Pot for high pressure for 10 minutes.
Quick release and immediately add the shrimp, stir to mix them in. Cover and let stand for 7-8 minutes or until shrimp is pink and cooked through.