What causes a SPN 7455 code?

SPN 7455 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 7455 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7455 active.

How do I fix SPN 7455?

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 7455

Cummins fault code 7455

What it means

Aftertreatment Control Module Software Mismatch - This code indicates that the software loaded on the Aftertreatment Control Module (ACM) is not compatible with the software on the Engine Control Module (ECM).