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P0446

Overview

Code

P0446

Code Type

P

Code Class

P0

System

Engine

Severity Level

Low

Emissions Related

true

Drivability Impact

None

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0446 indicates a malfunction in the EVAP vent control circuit

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 vent valve operation

Possible Causes

Vent valve stuck closed

Diagnostic Steps

1 Test vent valve operation; 2 Inspect wiring

Drive Safety Notes

Emissions test failure possible

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