P0440Medium Priority
Evaporative Emission Control System Malfunction
Category: Powertrain• Auxiliary Emission Controls
20 articles · 4 makes affected
What is P0440?
Evaporative Emission Control System Malfunction. General EVAP system problem, often related to fuel vapor leaks or faulty components.
Symptoms You May Notice
- ●Check engine light
- ●Fuel smell
- ●Failed emissions test
- ●Difficulty fueling
How to Fix It
- ●Replace gas cap ($15-$50, beginner)
- ●Replace EVAP purge valve ($100-$300, intermediate)
- ●Repair EVAP hose leaks ($100-$400, intermediate)
- ●Replace charcoal canister ($200-$600, intermediate)
Owner Statistics
Based on 86,080 real owner discussions • 1890 confirmed solutions
$1,227
Average Repair Cost
2%
Success Rate
20%
DIY Repairs
86,080
Data Sources
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
Frequently Appears With
These codes often appear together in owner reports. Check these if you see P0440.
- P04413 reports
- P04462 reports
- P02062 reports
- U14242 reports
- P05201 reports
- P05221 reports
- P04201 reports
- P07341 reports
Based on analysis of 13 owner reports where multiple codes appeared together.
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