charlesstorm1
RAV4 Hybrid NOx Sensor Failure
Summary of the thread
A 2019 Toyota RAV4 hybrid is experiencing a check engine light, with diagnostic codes indicating a NOx sensor failure. The owner suspects a bad connection in the cable or plug, especially since there's a slight exhaust leak. Another owner with a similar issue found that the problem was due to a defective cable rather than the sensor itself. It is suggested to have the vehicle professionally diagnosed to confirm the exact cause before proceeding with repairs.
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4 comment(s)
charlesstorm1 (community.author)
Fuel economy seems normal to me. Engine is running just fine. Where was the issue located in your case? Was it the sensor itself or the wiring?
davidbrown3
Alright, economy should be worse if the sensor fails completely. In my case, they checked the sensor first. Then they did some measurements and found out that the sensor was actually okay. Apparently the cable was defective. I’d suggest taking it to a workshop to get it properly diagnosed before replacing anything. In the end, the repair cost me around 95€.
charlesstorm1 (community.author)
Thanks for the info. Sounds like a trip to the workshop is in order. Hopefully, it's just a loose connection or a faulty wire like yours. Much appreciated.
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TOYOTA
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RAV4
davidbrown3
Interesting. I have a RAV4 hybrid too, and I had a similar issue not too long ago. Check engine light, same error code. Did you notice any change in your fuel economy or how the engine runs?