P0440
Evaporative Emission Control System Malfunction
Generic code
Auxiliary Emissions Control
Low severity
Hard repair
Free on OBD DashX
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What P0440 means
- The fault code P0440 indicates an issue with the vehicle's evaporative emission control system. This can lead to increased emissions and potential environmental damage.
Possible symptoms
- Illuminated check engine light
- Failed emissions test
- Decreased fuel efficiency
- Strong gasoline odor coming from the vehicle's exhaust.
Possible causes
- Faulty or loose gas cap
- Leaking or damaged hoses in the system
- Faulty or damaged charcoal canister
- Malfunctioning purge valve
- Faulty fuel tank pressure sensor
Related parts
- Evaporative Emission (EVAP) System: The EVAP system prevents petrol vapors from escaping into the atmosphere from the fuel tank and fuel system. Problems in this car's flow valve will lead to fuel loss
Possible solutions
- Tighten or replace the gas cap
- Inspect and repair any damaged hoses in the system
- Replace the charcoal canister if damaged
- Replace the purge valve if malfunctioning
- Replace the fuel tank pressure sensor if faulty
Free on OBD DashX
P0440 on OBD DashX
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