Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

The ECM detects that the MAP Sensor pressure is not within range of the calculated pressure that is derived from a system of models, for greater than 0. 5 s.
OR
The ECM detects that the MAP Sensor pressure is less than 50 kPa (7. 25 PSI), or greater than 115 kPa (16. 67 PSI) for greater than 0. 5 s, when the ignition ON and the engine OFF.