1. Press saute function; select pork setting. Press timer; set to 8 minutes. Start. Heat oil in inner pot. Add pork. Cook and stir until browned. Remove pork; drain. Return pork to inner pot.
2. Add next 12 ingredients. Lock pressure lid. Press pressure function; select custom. Press timer; set to 10 minutes. Start.
3. Let pressure release naturally for 5 minutes; quick-release any remaining pressure. If desired, serve with tortillas, onion, cilantro and lime wedges.