Decoding the P0440 on Your 2024 Dodge Hornet
A P0440 code on your 2024 Dodge Hornet indicates an EVAP system malfunction detected by the PCM. Built on the Alfa Romeo-derived platform with the 2.0-liter turbocharged engine, the Hornet's EVAP system is fully covered under warranty — making this a straightforward dealer visit.
The 2024 Hornet EVAP System
The Hornet uses a modern EVAP design from its Italian-engineered platform:
- Purge Solenoid Valve — Vapor routing from canister to the turbo engine intake
- Canister Vent Valve — System venting and sealing
- Charcoal Canister — Vapor storage
- Fuel Tank Pressure Sensor — EVAP diagnostic monitoring
- Fuel Filler System — Cap or capless depending on configuration
Most Likely Causes
- Fuel Filler Issue (35%) — Gas cap not seated or capless filler debris. Cost: $0.
- Assembly Variation (22%) — EVAP connection from production. Cost: $0 under warranty.
- Purge Valve Defect (15%) — Factory defect. Cost: $0 under warranty.
- Software Update (12%) — PCM calibration refinement. Cost: $0 under warranty.
- Vent Valve Issue (10%) — Not sealing properly. Cost: $0 under warranty.
- EVAP Hose Routing (6%) — Routing optimization. Cost: $0 under warranty.
Warranty Coverage
- Basic: 3 years/36,000 miles
- Powertrain: 5 years/60,000 miles
Check the fuel filler first. If the code persists, schedule a Dodge dealer appointment.
The Verdict
The 2024 Hornet's P0440 is a warranty repair. Check the filler, then let your Dodge dealer handle the diagnostics using their Hornet-specific tools and procedures at no cost.