What does code P1103 mean on Audi vehicles?
The heater circuit output of O2 sensor Bank 1 Sensor 1 is too low.
OBD-II Code Audi
P1103 — Audi — O2 Sensor Heater Circuit Bank 1 Sensor 1 Output Too Low
The heater circuit output of O2 sensor Bank 1 Sensor 1 is too low.
Common symptoms
- Delayed sensor activation.
Possible causes
- Open circuit or failed heater element.
Initial recommendation
Inspect O2 sensor heater circuit.
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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