What causes a SPN 2022 code?

SPN 2022 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 2022 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 2022 active.

How do I fix SPN 2022?

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 2022

Source Address 22 (Trailer Bridge) Communication

What it means

Communication link failure between the truck and the trailer gateway module.

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

Log in Sign up free