What does code P1109 mean on Audi vehicles?
Low voltage or air leak detected at O2 sensor Bank 2 Sensor 2.
OBD-II Code Audi
P1109 — Audi — O2 Sensor Circuit Bank 2 Sensor 2 Voltage Too Low / Air Leak
Low voltage or air leak detected at O2 sensor Bank 2 Sensor 2.
Common symptoms
- Check engine light
- high emissions.
Possible causes
- Exhaust leak or faulty O2 sensor.
Initial recommendation
Inspect O2 sensor and exhaust system.
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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