What causes a SPN 3159 code?

SPN 3159 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 3159 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3159 active.

How do I fix SPN 3159?

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 3159

J1939 SPN 3159 — Body/Chassis parameter

What it means

J1939 SPN 3159 indicates a general fault or abnormal data received from a Body/Chassis controller or parameter over the data link. It often relates to missing or invalid messages from secondary equipment like mixers, waste bodies, or crane controls.