What causes a SPN 76 code?

SPN 76 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 76 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 76 active.

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 76

J1939 SPN 76 — Engine parameter

What it means

SPN 76: Engine Protection Remote Shutdown Switch Signal. This code triggers when the ECM detects an invalid signal or a request to shut down the engine from an external/remote safety switch.