P1440 Code - Evaporative Emission Control System Small Leak
Quick Answer
The P1440 code indicates a small leak in the evaporative emission control system of the vehicle. Common causes include Loose or damaged gas cap, Cracked or damaged hoses in the evaporative emission control system, Faulty purge valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1440 indicates Evaporative Emission Control System Small Leak.
- Common causes
- Common causes include Loose or damaged gas cap, Cracked or damaged hoses in the evaporative emission control system, Faulty purge valve.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1440 Description
The P1440 code indicates a small leak in the evaporative emission control system of the vehicle. This system is responsible for capturing and storing fuel vapors that would otherwise be released into the atmosphere, helping to reduce harmful emissions. A small leak in this system can lead to increased emissions, reduced fuel efficiency, and potential damage to other components of the vehicle.
Common Causes of P1440
- Loose or damaged gas cap
- Cracked or damaged hoses in the evaporative emission control system
- Faulty purge valve
- Leaking charcoal canister
- Malfunctioning fuel tank pressure sensor
Symptoms of P1440
- Check Engine Light illuminated
- Strong fuel odor near the vehicle
- Decreased fuel efficiency
- Rough idle or stalling
- Failed emissions test
How to Fix P1440
- Inspect and tighten or replace the gas cap
- Check and replace any damaged hoses in the evaporative emission control system
- Test and replace the purge valve if necessary
- Inspect and replace the charcoal canister if leaking
- Test and replace the fuel tank pressure sensor if faulty
Cost to Fix P1440
The typical repair costs for a P1440 code can range from $100 to $500, depending on the specific cause of the issue and the labor rates in your area. It's always recommended to get a diagnosis from a qualified mechanic to determine the exact source of the problem before proceeding with repairs.
Tech Notes for P1440
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Code P1440 Information for Specific Makes
- P1440 Audi — EGR Valve Power Stage Open
- P1440 BMW — Purge Control Valve Control Circuit Signal High
- P1440 Honda — Motor Power Inverter (MPI) Module Output Circuit Malfunction
- P1440 Hyundai — EVAP System Vent Circuit
- P1440 Infiniti — Evaporative Emission Control System Small Leak
- P1440 Jaguar — Evaporative Emission Canister Purge Valve Open
- P1440 Lexus — Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 1
- P1440 Nissan — Evaporative Emission Control System Small Leak
- P1440 Subaru — Fuel Tank Pressure Control System Low Input
- P1440 Toyota — Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 1
- P1440 Volkswagen — EGR Valve Power Stage Open
Frequently Asked Questions about P1440 Code
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