What causes a SPN 2800 code?

SPN 2800 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 2800 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 2800 active.

How do I fix SPN 2800?

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 2800

SPN 2800 - Fuel Delivery Pressure Sensor (High Pressure)

What it means

Indicates the ECU has detected an out-of-range or improbable signal from the high-pressure fuel delivery sensor located on the fuel rail or pump manifold.