What causes a SPN 7763 code?

SPN 7763 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 7763 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7763 active.

How do I fix SPN 7763?

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 7763

Cummins fault code 7763

What it means

PTO Remote Switch - Abnormal Frequency, Pulse Width, or Period. This fault occurs when the Engine Control Module (ECM) detects an invalid or out-of-range signal from the remote PTO engagement switch.