What causes a SPN 3180 code?

SPN 3180 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 3180 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3180 active.

How do I fix SPN 3180?

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 3180

J1939 SPN 3180 — Body/Chassis parameter

What it means

J1939 Data Link communications mismatch or timeout specifically relating to parameters sent by the body or chassis controller (e.g., PTO status, parking brake signal, or neutral safety switch data).