What causes a SPN 3179 code?

SPN 3179 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 3179 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3179 active.

How do I fix SPN 3179?

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 3179

J1939 SPN 3179 — Body/Chassis parameter

What it means

Standard Fault Code SPN 3179 indicates a 'Missing' or 'Abnormal' signal received by the Engine or Aftertreatment controller from the Body/Chassis controller regarding specific vehicle configuration parameters.