What causes a SPN 3272 code?

SPN 3272 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 3272 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3272 active.

How do I fix SPN 3272?

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 3272

Particulate Matter Sensor Power Circuit Failure

What it means

This fault occurs when the Aftertreatment Control Module (ACM) detects a short or open circuit in the power supply line to the Particulate Matter (PM) sensor.