What causes a SPN 5271 code?

SPN 5271 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 5271 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 5271 active.

How do I fix SPN 5271?

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 5271

Cummins fault code 5271

What it means

Engine Oil Pressure - Data Valid but Below Normal Operating Range - Moderately Severe Level. This indicates that the ECM detects the oil pressure is lower than the safety threshold for the current RPM/load.