Skoda Superb Oxygen Sensor Problem

Oxygen sensor heater failures aren't uncommon, especially as car components age. The heater element inside the sensor helps it reach operating temperature quickly so it can accurately measure vehicle emissions. A faulty sensor will definitely trigger the check engine light. Does the error code specify which oxygen sensor is the problem, e.g. bank 1 sensor 1 or bank 2 sensor 1? Knowing that will help narrow it down. Also, have you checked the cable and plug connection to the sensor for any obvious damage or corrosion?

Thanks for the quick reply! The error code just says 'Oxygen Sensor Heater Circuit Malfunction'. I haven't checked the wiring myself – honestly, I wouldn't really know what I'm looking for. Is it easy to check the sensor connection?

Yes, a faulty oxygen sensor heater can certainly cause those symptoms. The heater ensures the sensor reaches its optimal operating temperature quickly, especially during cold starts. Without it, the engine control unit (ECU) receives inaccurate readings, leading to increased fuel consumption and potentially affecting vehicle emissions. While it might be a simple fix like a loose connector, 'Oxygen Sensor Heater Circuit Malfunction' suggests a deeper issue. For peace of mind and to avoid potential damage to other car components, I advise taking it to a workshop. The cost you mentioned, 95€, sounds reasonable for a sensor replacement.

Just wanted to let you know that your tip was spot on! Took it to the workshop, and they confirmed it was indeed the oxygen sensor heater. New sensor installed, cost me 95€, and the check engine light is gone! Thanks for the help!