What causes a SPN 575 code?

SPN 575 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 575 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 575 active.

How do I fix SPN 575?

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 575

J1939 SPN 575 — Engine Management parameter

What it means

SPN 575 refers to an Engine Management parameter error, typically associated with Cruise Control or PTO (Power Take-Off) enable/speed control signals. It indicates the ECM is receiving invalid or conflicting data regarding how the engine speed should be governed.