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Home/DTC Codes/Aston Martin/DB9/2004-2016 6.0L V12/P0446
P0446

EVAP Vent Control Circuit

2004-2016 Aston Martin DB9 6.0L V12

Low SeverityPowertrainGeneric (SAE)

Description

Malfunction in the EVAP vent control circuit. The vent valve controls airflow to the charcoal canister.

Symptoms

  • Check Engine Light
  • Fuel tank pressure issues
  • Difficulty refueling

Common Causes

  • Faulty vent valve
  • Blocked vent filter
  • Wiring issue
  • Spider webs/debris in vent hose

Diagnostic Steps

  1. Test vent valve operation
  2. Inspect vent filter
  3. Check wiring
  4. Inspect vent hose for blockage

Repair Notes

Replace vent valve or clean vent. Check for debris in vent hose.

Related Codes

P0440Evaporative Emission Control System MalfunctionP0449EVAP Vent Valve/Solenoid Circuit

Other Powertrain Codes

P0446 on Other Vehicles

Aston Martin DB11

2016-2024 4.0L V8 Twin Turbo

Aston Martin DB11

2016-2024 5.2L V12 Twin Turbo

Aston Martin DB7

1994-2003 3.2L I6 Supercharged

Aston Martin DBS Superleggera

2019-2024 5.2L V12 Twin Turbo

Aston Martin DBX

2020-2024 4.0L V8 Twin Turbo

Aston Martin Vantage

2005-2024 4.7L V8

Aston Martin Vantage

2018-2024 4.0L V8 Twin Turbo

Common Questions

What does code P0446 mean on a 2004-2016 Aston Martin DB9?

P0446 stands for "EVAP Vent Control Circuit". Malfunction in the EVAP vent control circuit. The vent valve controls airflow to the charcoal canister.

What are the symptoms of P0446 on a Aston Martin DB9?

Common symptoms of P0446 include: Check Engine Light, Fuel tank pressure issues, Difficulty refueling.

What causes P0446 on a 2004-2016 Aston Martin DB9?

Common causes of P0446 include: Faulty vent valve, Blocked vent filter, Wiring issue, Spider webs/debris in vent hose.

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