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Seat Arona check engine light and fuel consumption issue

My 2020 Seat Arona, diesel engine, 194877 km, shows an error stored in the error memory. The check engine light illuminates, and fuel consumption has increased. I suspect an aged oxygen sensor. The likely cause could be a defective cable or plug connection.

A 2020 Seat Arona with a diesel engine exhibited a check engine light and increased fuel consumption, suspected to be due to an aged oxygen sensor. The issue was likely caused by a defective cable or plug connection. It was suggested to check the exhaust sensor and catalytic converter as well. After maintenance, which involved addressing the oxygen sensor and plug connection, fuel efficiency improved.

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4 comment(s)

I have a Seat Arona as well. Experienced similar symptoms. Error memory, check engine light, and increased fuel consumption. Suspect the O2 sensor. Have you checked the exhaust sensor and catalytic converter?

Did a defective cable or plug connection cause your issue, or was it the oxygen sensor itself?

For me, the cable and plug connection to the O2 sensor was the culprit. However, the workshop suggested replacing the oxygen sensor preventatively since it's related to the exhaust sensor and impacts the catalytic converter. I'd recommend visiting a workshop.

Acknowledged. The oxygen sensor and the plug connection were indeed the source of the problem. Car maintenance was carried out, and fuel efficiency has improved. Final repair cost amounted to 95€. Thank you for your input.

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SEAT

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ARONA