What does code P1553 mean on Hyundai vehicles?
The closing coil circuit of the idle air control valve is open, affecting idle stability.
OBD-II Code Hyundai
P1553 — Hyundai — IAC Valve Closing Coil Circuit Open
The closing coil circuit of the idle air control valve is open, affecting idle stability.
Common symptoms
- Unstable idle speed
Possible causes
- Faulty IAC valve
- open circuit in wiring
Initial recommendation
Test IAC valve closing coil resistance and wiring continuity.
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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