What causes a SPN 7007 code?

SPN 7007 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 7007 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7007 active.

How do I fix SPN 7007?

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 7007

Cummins fault code 7007

What it means

Aftertreatment Diesel Exhaust Fluid Quality - Root Cause Not Known. This code indicates that the DEF quality sensor has detected fluid that does not meet the specified urea concentration or identifies contaminants.