What causes a P1481 code?

P1481 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 P1481 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1481 active.

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.

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OBD-II

P1481

EGR CAN sensor overload

What it means

The engine control module detects an electrical overload or short circuit on the CAN communication or supply line related to the EGR sensors.

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