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.
P054E
A fault is detected when the current fuel injection quantity is lower than the allowed limit for greater than 24 s.
P054F
A fault is detected when the current fuel injection quantity is higher than the allowed limit for greater than 24 s.