What causes a SPN 3045 code?

SPN 3045 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 3045 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3045 active.

How do I fix SPN 3045?

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 3045

J1939 SPN 3045 — Body/Chassis parameter

What it means

SPN 3045 indicates a generic or manufacturer-specific fault related to a Body/Chassis parameter. It often signifies that a signal from the body controller or a specific chassis sensor is invalid or missing over the J1939 network.