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danielkoch52

Atos Oxygen Sensor Issue

My 2021 Hyundai Atos with a gasoline engine is acting up! The check engine light is on, and the computer says there's an issue with the oxygen sensor heater. I'm also seeing higher fuel consumption. I suspect a bad connection, but where do I even start?

Summary of the thread

A 2021 Hyundai Atos owner experienced a check engine light and increased fuel consumption, with diagnostics indicating an issue with the oxygen sensor heater. The problem was identified as a bad connection, specifically a damaged wire to the sensor. The suggested solution was to take the car to a workshop for proper diagnosis and repair, which resolved the issue.

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4 comment(s)

kevinwalter1

I had a similar issue with my Atos a while back. The oxygen sensor can be a real pain. Does the error code specifically mention which sensor (bank 1, sensor 1 or 2)? Knowing that might help narrow things down.

danielkoch52 (community.author)

Good point! Yeah, it says 'Bank 1, Sensor 1'. Any thoughts based on that?

kevinwalter1

Bank 1, Sensor 1 usually means the sensor before the catalytic converter. Given the symptoms and your suspicion of a bad connection, and without proper sensor testing tools, I'd suggest taking it to a trusted workshop. A damaged cable is like a leaky pipe - hard to find without the right equipment!

danielkoch52 (community.author)

Yeah, you're right, poking around without knowing what I'm doing could make things worse. I took it to a shop today. Turns out a wire to the sensor was indeed the culprit. Cost me 95€, and now she purrs like a kitten! I appreciate the advice!

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HYUNDAI

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ATOS