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P0451

Overview

Code

P0451

Code Type

P

Code Class

P0

System

Emissions

Severity Level

Medium

Emissions Related

true

Drivability Impact

None

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0451 indicates an incorrect signal from the EVAP pressure sensor

Symptoms

Check Engine Light

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

EVAP pressure sensor signal

Possible Causes

Sensor malfunction

Diagnostic Steps

1 Inspect sensor 2 Test sensor signal

Drive Safety Notes

Evap function affected

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