What causes a SPN 767 code?

SPN 767 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 767 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 767 active.

How do I fix SPN 767?

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 767

J1939 SPN 767 — Engine Management parameter

What it means

Transmission Reverse Gear Switch fault. This code indicates that the engine or body controller is receiving an invalid or missing signal from the switch that detects when the transmission is in reverse.