What does code P1118 mean on Audi vehicles?
An open circuit has been detected in the heater circuit of O2 sensor Bank 1 Sensor 2.
OBD-II Code Audi
P1118 — Audi — O2 Sensor Heater Circuit Bank 1 Sensor 2 Open
An open circuit has been detected in the heater circuit of O2 sensor Bank 1 Sensor 2.
Common symptoms
- O2 sensor does not enter closed-loop operation.
Possible causes
- Broken wire in heater circuit.
Initial recommendation
Repair the 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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