Q: How do I determine if vacuum leak is in system or bad pump on 2003 Ford Taurus

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
engine light stays on, does not flash. The code is for vacuum system failure. Not sure if it is in hoses or in vacuum pump. How do I determine ? Car runs well, heater/air conditioner runs well. Short of expensive trip to dealership I could use some ideas
(2) Answers