What causes a SPN 3712 code?

SPN 3712 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 3712 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3712 active.

How do I fix SPN 3712?

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 3712

SPN 3712 — Aftertreatment SCR Operator Inducement Severity

What it means

Aftertreatment SCR Operator Inducement Severity. This code indicates the engine is in a derate state because a primary emission fault was ignored for too long.