Evaporative Emission Control System Malfunction
2004-2016 Aston Martin DB9 6.0L V12
Description
General EVAP system malfunction. The EVAP system captures fuel vapors and prevents them from escaping to the atmosphere.
Symptoms
- Check Engine Light
- Fuel smell
- Failed emissions test
Common Causes
- Loose or missing gas cap (most common)
- Cracked EVAP hose
- Faulty purge valve
- Faulty vent valve
- Charcoal canister saturated
- Leak in fuel tank or filler neck
Diagnostic Steps
- Check gas cap seal and tighten
- Perform EVAP smoke test
- Test purge valve
- Test vent valve
- Check EVAP hoses
- Inspect charcoal canister
Repair Notes
Start with gas cap - tighten and clear code. If returns, smoke test the EVAP system.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0440 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 P0440 mean on a 2004-2016 Aston Martin DB9?
P0440 stands for "Evaporative Emission Control System Malfunction". General EVAP system malfunction. The EVAP system captures fuel vapors and prevents them from escaping to the atmosphere.
What are the symptoms of P0440 on a Aston Martin DB9?
Common symptoms of P0440 include: Check Engine Light, Fuel smell, Failed emissions test.
What causes P0440 on a 2004-2016 Aston Martin DB9?
Common causes of P0440 include: Loose or missing gas cap (most common), Cracked EVAP hose, Faulty purge valve, Faulty vent valve, Charcoal canister saturated, Leak in fuel tank or filler neck.