What does code P1198 mean on Audi vehicles?
An electrical malfunction has been detected in the heater circuit of O2 sensor Bank 1 Sensor 2.
OBD-II Code Audi
P1198 — Audi — O2 Sensor Heater Circuit Bank 1 Sensor 2 Electrical Malfunction
An electrical malfunction has been detected in the heater circuit of O2 sensor Bank 1 Sensor 2.
Common symptoms
- Downstream oxygen sensor inoperative.
Possible causes
- Faulty wiring or heater.
Initial recommendation
Check downstream O2 sensor heater.
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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