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XC60 Oxygen Sensor Heater Failure

Hi, I have a 2021 Volvo XC60 with a gasoline engine. I'm getting an oxygen sensor heater failure. The check engine light is on, and my fuel consumption seems higher. I suspect a faulty sensor, but I'm not sure where to start.

A 2021 Volvo XC60 owner reported an oxygen sensor heater failure, indicated by a check engine light and increased fuel consumption. The issue was suspected to be a faulty sensor. A suggestion was made to inspect the cable and plug connection, as a defective connection could be the cause. Upon professional inspection, a defective plug connection was identified and repaired.

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4 comment(s)

That's an interesting issue. I had something similar with my old BMW 3 Series. The check engine light was on, and the error memory indicated a problem with the oxygen sensor. Have you checked the cable and plug connection of the component? It could be a defective connection.

Thanks for the hint! No, I haven't checked the cable and plug connection yet. Where exactly should I be looking? Any tips for diagnosing a defective connection?

Well, in my case, after extensive sensor testing, the workshop found that the heater element circuit was indeed open due to a corroded connector. Given that you're seeing higher fuel consumption, I'd recommend having the sensor and its wiring checked by a professional.

Thanks, I appreciate the advice. I'll take it to the workshop. They found a defective plug connection. Repair cost was 95€. Thanks again!

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VOLVO

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XC60