What causes a SPN 3315 code?

SPN 3315 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 3315 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3315 active.

How do I fix SPN 3315?

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 3315

J1939 SPN 3315 — Body/Chassis parameter

What it means

This code indicates that there is an invalid or incomplete parameter received over the J1939 network regarding body/chassis configuration. It typically triggers when the ECM expects specific data from the body controller that is either missing or out of range.