What causes a SPN 617 code?

SPN 617 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 617 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 617 active.

How do I fix SPN 617?

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 617

J1939 SPN 617 — Engine Management parameter

What it means

SPN 617 relates to the Aftertreatment Relay or Intake Gas Sensor Power. It indicates the ECM senses an improper voltage state (low or high) on the circuit providing power to the exhaust sensors or aftertreatment components.