What causes a P2466 code?

P2466 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 P2466 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2466 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

P2466

DPF Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3

What it means

The Engine Control Module (ECM) has detected a high voltage signal from the Diesel Particulate Filter (DPF) outlet temperature sensor (Bank 1, Sensor 3). This indicates the resistance in the circuit is too high, suggesting an open circuit or a faulty sensor.