What causes a P2475 code?

P2475 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 P2475 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2475 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

P2475

Exhaust Gas Temperature Bank 1 Sensor 4 Circuit Range/Performance

What it means

The Engine Control Module (ECM) has detected an irrational voltage signal from the Exhaust Gas Temperature (EGT) sensor located after the Diesel Particulate Filter (DPF) but before the SCR catalyst.