How to Diagnose and Repair P2281 Cummins Engine Code The P2281 Cummins engine code is a diagnostic trouble code (DTC) that indicates an issue with the fuel pressure regulator. This code can be triggered by a variety of issues, including low fuel pressure, a faulty fuel pressure regulator, or an air leak in the intake system. To diagnose and repair this issue, it is important to understand the components involved and how they work together. The first step in diagnosing …
