What does p0868 mean on a Cummins pump?
What does p0868 mean on a Cummins pump? And remind them to READ THE INSTRUCTION SHEET that comes with the new pump assy! P0868 is Line Pressure Low, and it means (typically) that your line pressure was 15 psi (or more) below the Desired Line Pressure value, for some short period of time (maybe 1 second or longer). What are the common causes of code p0869? What are the common causes of code P0869? 1 Defective pressure control sensor 2 Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors 3 Mechanical failure of transmission components 4 Failed or failing PCM...