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linda_blade1

Noah oxygen sensor heater issue

Hi, I've got a problem with my 2017 Toyota Noah, gasoline engine. The check engine light is on, and the error memory says something about the oxygen sensor heater. I've also noticed my fuel consumption is higher than usual. I checked the wiring and it looks okay, but I suspect the plug connection might be the culprit. Has anyone else experienced this?

Summary of the thread

A 2017 Toyota Noah owner is experiencing a check engine light and increased fuel consumption, with an error indicating an oxygen sensor heater issue. The wiring appears intact, but the plug connection might be faulty. Another owner suggests the problem could be a defective heater element within the sensor, recommending a professional diagnosis to confirm and resolve the issue.

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4 comment(s)

gerhardlight1

I also own a Noah. Had a similar issue. The check engine light and increased fuel consumption were the first signs. Have you checked the sensor itself, or just the wiring? It could be a faulty heater element within the sensor.

linda_blade1 (community.author)

Thanks for the reply! I only checked the wiring so far. How did you find out that the heater element was broken? Is there a way to test it without special equipment?

gerhardlight1

Unfortunately, I couldn't test it myself. I took it to a workshop, they identified the defective sensor. Think of it like a lightbulb filament burning out. Best to get it properly diagnosed to be sure.

linda_blade1 (community.author)

Appreciate the advice. I'll take it to a workshop and have them check the sensor properly. It's probably better than messing around with it myself, especially with the exhaust system involved. The repair cost was 95€, so it's not the end of the world.

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TOYOTA

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NOAH