What causes a SPN 588 code?

SPN 588 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 588 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 588 active.

How do I fix SPN 588?

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 588

J1939 SPN 588 — Engine Management parameter

What it means

SPN 588 relates to the 'Air Temperature' or 'Air Inlet Temperature' parameter being broadcast over the J1939 data link. It indicates that the receiving module is not getting valid data for this specific engine parameter.