What does code P1404 mean on Hyundai vehicles?
The heater circuit inside the EVAP leakage diagnostic module is malfunctioning, affecting system self-tests.
OBD-II Code Hyundai
P1404 — Hyundai — Fuel Tank Leakage Diagnostic Module Heater Malfunction
The heater circuit inside the EVAP leakage diagnostic module is malfunctioning, affecting system self-tests.
Common symptoms
- Check engine light on
Possible causes
- Heater circuit failure
- wiring issues
- internal module fault
Initial recommendation
Inspect heater circuit wiring and replace EVAP diagnostic module if required.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
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