What causes a SPN 357 code?

SPN 357 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 357 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 357 active.

How do I fix SPN 357?

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 357

J1939 SPN 357 — Fuel/Air parameter

What it means

SPN 357 relates to the Fuel Pressure (Supply) sensor. It indicates that the Engine Control Module (ECM) has detected a signal from the fuel pressure sensor that is outside of the normal operating range (either too high, too low, or erratic).