jonathantaylor4
Aveo NOx Sensor Failure
Summary of the thread
A 2007 Chevrolet Aveo is experiencing a check engine light due to a NOx sensor failure, with a slight exhaust leak also noted. The owner suspects a bad connection might be the cause and is hesitant to replace the sensor without further investigation. A similar issue in another vehicle was resolved by confirming the sensor's failure and replacing it, suggesting that checking the wiring and connections before replacing the sensor could be a prudent approach.
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4 comment(s)
jonathantaylor4 (community.author)
The error code points to the NOx sensor. It's pretty constant now. It flickered at first, but now it's always on. I want to check the wiring before replacing the sensor. Was your Opel's sensor issue also constant? Did you end up replacing the sensor or was it something else?
dirkhoffmann29
Yeah, mine was pretty consistent once it failed completely. I tried cleaning the contacts on the plug first, but that didn't help. I took it to a workshop, and they confirmed the sensor was dead. It was easier to let them replace it after the diagnosis. Saved me the trouble.
jonathantaylor4 (community.author)
Thanks for the info! It sounds like I should get it checked out. The sensor is about 95€, which isn't too bad, but I'd rather not buy one if it is just a bad plug. I will post what the solution is.
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CHEVROLET
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AVEO
dirkhoffmann29
I had something similar happen with my old Opel Corsa. The check engine light was on, and it turned out to be a faulty sensor in the exhaust system. What error code are you getting exactly? Is it intermittent or constant?