What causes a SPN 1763 code?

SPN 1763 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 1763 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 1763 active.

How do I fix SPN 1763?

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

Log in Sign up

J1939 SPN

SPN 1763

Aftertreatment DEF Tank Level - Voltage Abnormal

What it means

Electric fault in the DEF level sensor circuit, usually an open or short to ground.

Sign in to view symptoms, probable causes, diagnostic steps, severity, and related codes

Log in Sign up free