Prep vegetables.Chop the carrots, celery and onion. Peel and smash the garlic cloves. Dice the roasted red peppers. Dice the tomatoes (if using fresh).
Turn Instant Pot on "SAUTE" (normal heat). When "HOT" is displayed, add EVOO and heat until hot but not smoking (1 minute). Add the chopped carrots and saute while stirring until just softened (2 minutes). Add the chopped celery and onions, stir and saute for 1 minute. Add the garlic, stir and saute until fragrant (30 seconds).
Stir in the grape juice and cook, stirring frequently until the liquid has cooked off (5 minutes). Turn the Instant Pot off ("CANCEL").
Add the chopped roasted red peppers and the remaining ingredients to the Instant Pot (except for the tomato paste) and stir. Add the tomato paste to the top of everything else, but do not stir! Leave it be on top of everything else!
Lock the lid, seal the pressure valve and program to "PRESSURE COOK" at "HIGH PRESSURE" for 30 minutes. When cooking is complete, turn the Instant Pot off and let pressure release naturally for 20 minutes and then manually release any remaining pressure.
Blend the sauce in the IP with an immersion blender or transfer to a blender in batches and blend until smooth. Serve hot with your favorite vegetable noodle/pasta or cool completely before refrigerating or freezing.