What causes a SPN 7483 code?

SPN 7483 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 7483 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7483 active.

How do I fix SPN 7483?

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 7483

Cummins fault code 7483

What it means

Aftertreatment SCR Intake Temperature - Root Cause Not Known. This is typically a communication or data validity error regarding the Selective Catalytic Reduction (SCR) temperature sensors.