What causes a SPN 6762 code?

SPN 6762 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 6762 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 6762 active.

How do I fix SPN 6762?

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 6762

Cummins fault code 6762

What it means

Aftertreatment Ammonia Sensor - Incorrect Data. The engine control module (ECM) detects that the ammonia sensor reading is not within the expected range or is not correlating with the SCR efficiency models.