Pour water into Instant Pot® and add trivet.
In a small bowl, mix together taco seasoning and oil. Brush taco seasoning on cod. Place seasoned cod on trivet.
Close lid and set pressure release to Sealing.
Press Manual or Pressure Cook button and adjust time to 5 minutes.
When the timer beeps, quick release pressure and then unlock lid and remove it. Remove cod.
In a small bowl, mix together mayonnaise, sour cream, lime juice, sriracha, garlic powder, and cumin.
Serve cod on tortillas topped with sauce and cabbage.
PER SERVING CALORIES: 407 | FAT: 22g | PROTEIN: 24g | SODIUM: 745mg FIBER: 5g | CARBOHYDRATES: 30g | SUGAR: 3g