What causes a P2474 code?

P2474 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 P2474 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2474 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

P2474

Exhaust Gas Temperature Sensor 4 Circuit Range Performance

What it means

The Engine Control Module (ECM) detects an implausible or erratic signal from the Exhaust Gas Temperature (EGT) sensor located at Bank 1, Sensor 4, typically downstream of the Diesel Particulate Filter (DPF).