What causes a SPN 2133 code?

SPN 2133 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 2133 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 2133 active.

How do I fix SPN 2133?

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 2133

Hill Start Aid Status

What it means

Operational state of the braking system's feature to prevent rollback on a grade.

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

Log in Sign up free