P2173-High airflow/vacuum leak detected.
The common cause for that code and poor idle is a big vacuum leak, most of the time from a broken fitting or line. I would start by checking every vacuum line and fitting, including the under vehicle EVAP lines. Check the MAP sensor, PCV system and the plastic intake manifold for cracks/holes. Also the brake booster as well.
Wednesday, April 11th, 2018 AT 12:35 AM