What causes a SPN 316 code?

SPN 316 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 316 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 316 active.

How do I fix SPN 316?

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 316

J1939 SPN 316 — Fuel/Air parameter

What it means

SPN 316 corresponds to the Engine Fuel Injection Pressure. This code indicates the Engine Control Module (ECM) has detected that the fuel rail pressure is outside of the expected threshold relative to engine speed and load.