Can a blocked vent cause P0453?

Yes — if the tank cannot vent, pressure builds up, and the sensor correctly reads high. Fix the vent issue.

Will this affect gas pump shutoff?

Possibly — high tank pressure can cause the pump nozzle to click off repeatedly.

Low Severity

EVAP System

Fuel tank pressure sensor reads too high.

Common Fix

Replace sensor or fix vent

Estimated Cost (DIY)

$30 - $80

Open circuit in sensorlikely

Disconnected connectorpossible

Blocked vent causing tank pressurepossible

Need to read or clear this code?

Can a blocked vent cause P0453?: Yes — if the tank cannot vent, pressure builds up, and the sensor correctly reads high. Fix the vent issue.
Will this affect gas pump shutoff?: Possibly — high tank pressure can cause the pump nozzle to click off repeatedly.

Need a diagnosis for your specific vehicle?

100% Free — No signup required