What causes a P0544 code?

P0544 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 P0544 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0544 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.

OBDIY

OBD-II

P0544

Exhaust Gas Temperature Sensor Circuit - Bank 1 Sensor 1

What it means

The Engine Control Module Detects an electrical malfunction or out-of-range signal from the EGT sensor located before the turbocharger or at the inlet of the DOC/DPF.