What causes a SPN 7217 code?

SPN 7217 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 7217 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7217 active.

How do I fix SPN 7217?

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 7217

Cummins fault code 7217

What it means

Aftertreatment SCR System Relay - Voltage Below Normal or Shorted to Low Source. The Engine Control Module (ECM) detects that the SCR system relay is not receiving power or the circuit is shorted to ground.