What causes a SPN 2102 code?

SPN 2102 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 2102 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 2102 active.

How do I fix SPN 2102?

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 2102

Transmission Oil Temperature Signal Not Available

What it means

The CAN bus message for transmission fluid temperature is missing or corrupted.

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

Log in Sign up free