What causes a P0435 code?

P0435 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 P0435 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0435 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

P0435

Catalyst Temperature Sensor Bank 2 Low Voltage

What it means

The Engine Control Module has detected a voltage signal from the Bank 2 Catalyst Temperature Sensor that is below the calibrated threshold, indicating a circuit or sensor failure.