What causes a P0453 code?

P0453 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 P0453 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0453 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

P0453

P0453 Engine Fuel Tank Pressure Sensor High Circuit

What it means

The Engine Control Module (ECM) has detected an abnormally high voltage signal from the fuel tank pressure sensor, typically indicating a wiring short to voltage or a failed sensor.