What does code P1198 mean on Volkswagen vehicles?
The ECU detects an electrical malfunction in the heater circuit of oxygen sensor bank 1 sensor 2.
OBD-II Code Volkswagen
P1198 — Volkswagen — Oxygen Sensor Heater Circuit Bank 1 Sensor 2 Electrical Malfunction
The ECU detects an electrical malfunction in the heater circuit of oxygen sensor bank 1 sensor 2.
Common symptoms
- Check engine light
Possible causes
- Faulty oxygen sensor heater
- wiring issues
Initial recommendation
Inspect heater circuit and replace sensor if necessary.
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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