What causes a SPN 7371 code?

SPN 7371 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 7371 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7371 active.

How do I fix SPN 7371?

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 7371

Cummins fault code 7371

What it means

Humidity Sensor - Data Erratic, Intermittent, or Incorrect. This indicates the ECM has detected a signal from the intake air humidity sensor that is physically impossible or unstable.