What does code P1504 mean on Ford vehicles?
An electrical fault is detected in the idle air control (IAC) valve circuit.
OBD-II Code Ford
P1504 — Ford — IAC Circuit Malfunction
An electrical fault is detected in the idle air control (IAC) valve circuit.
Common symptoms
- Unstable idle
Possible causes
- Faulty IAC valve
Initial recommendation
Inspect the IAC valve and related wiring.
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.
Analyze this code with MecaOBD
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