What causes a SPN 719 code?

SPN 719 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a SPN 719 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 719 active.

How do I fix SPN 719?

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

J1939 SPN

SPN 719

J1939 SPN 719 — Engine Management parameter

What it means

SPN 719 refers to the Engine Fuel Extended Range Pressure sensor circuit. It monitors the pressure of the fuel delivery system, typically on the low-pressure side before the high-pressure pump.