What does code P1509 mean on Audi vehicles?
An electrical malfunction has been detected in the idle air control circuit.
OBD-II Code Audi
P1509 — Audi — Idle Air Control Circuit Electrical Malfunction
An electrical malfunction has been detected in the idle air control circuit.
Common symptoms
- Unstable idle.
Possible causes
- Electrical fault.
Initial recommendation
Inspect IAC valve.
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
Use the app to combine Audi code P1509 with your vehicle's actual symptoms for more complete diagnostic guidance.
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