P0457Hyundai Ioniq-5Years: 1996 - 2026
EVAP Emission Control System Leak Detected (Fuel Cap Loose/Off)
Reviewed by ASE Certified Technician
What does this mean?
Code P0457 indicates an EVAP system issue, commonly related to the fuel cap or purge system.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Hyundai Ioniq-5 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Loose, damaged, or missing gas cap
Faulty EVAP purge control valve
Cracked or disconnected EVAP hose
Symptoms to Watch For
- Check Engine Light is illuminated
- Strong fuel odor from vehicle
- Failed emissions test