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emmawinkler3

Skoda Fabia Oxygen Sensor Error

I'm a bit stumped. My 2007 Skoda Fabia with a diesel engine keeps throwing an error related to the oxygen sensor. The check engine light is on, and I've noticed higher fuel consumption. Could a defective cable or plug connection really cause this? Had a similar experience?

Summary of the thread

A 2007 Skoda Fabia with a diesel engine is experiencing an oxygen sensor error, leading to a check engine light and increased fuel consumption. The issue is suspected to be caused by a defective cable or plug connection to the oxygen sensor. It is suggested to check the wiring and plug connection, as a corroded or loose connection can lead to such errors. The problem was resolved by fixing a faulty connection on the oxygen sensor heater element at a workshop.

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4 comment(s)

barbarablaze22

That sounds like a classic oxygen sensor heater failure. I had a similar issue on my old BMW. The DME was throwing codes related to the air-fuel ratio being off. Have you checked the wiring and the plug connection to the oxygen sensor itself? A corroded or loose connection can cause this.

emmawinkler3 (community.author)

Thanks for the tip! I'm not super familiar with car components. Where exactly is the oxygen sensor located, and is it something I can easily check myself without special tools?

barbarablaze22

Yes, a defective connection is a common cause. The heater element needs a good connection to function. If you're not comfortable doing electrical diagnostics, I'd suggest taking it to a workshop. They can properly test the sensor and wiring harness.

emmawinkler3 (community.author)

Took the Fabia to the shop. It was a faulty connection on the oxygen sensor heater element, as suspected. 95€ later and the malfunction indicator is off. Thanks for the help!

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SKODA

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FABIA