What causes a SPN 1723 code?

SPN 1723 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 1723 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 1723 active.

How do I fix SPN 1723?

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

Log in Sign up

J1939 SPN

SPN 1723

Electric Lift Pump Speed

What it means

The rotational speed of the low-pressure electric fuel lift pump is not meeting the commanded value.

Sign in to view symptoms, probable causes, diagnostic steps, severity, and related codes

Log in Sign up free