rudolf_sturm1
Tacoma NOx Sensor Failure
Summary of the thread
A 2006 Toyota Tacoma is experiencing a check engine light due to a NOx sensor failure, potentially compounded by an exhaust leak. Despite checking cables and plugs, the issue persists, leading to frustration. A faulty plug connection was identified as the cause, and a shop fixed it for a fee, resolving the problem.
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4 comment(s)
rudolf_sturm1 (community.author)
Cleaning them, huh? I just eyeballed them, didn't see any corrosion or anything obvious. What did you use to clean the connection on your Saab? Was it a specific kind of cleaner or just like, electrical contact cleaner?
manuelloewe53
Electrical contact cleaner did the trick for me. But honestly, after all that messing around, the light kept coming back. Ended up taking it to a shop.
rudolf_sturm1 (community.author)
Ugh, that's what I was afraid of. Guess I'll bite the bullet and take it in. The shop diagnosed it as a faulty NOx sensor due to a defective plug connection. They charged me 95€ to fix the connection. Thanks for sharing your experience, at least I know I wasn't completely missing something obvious!
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TOYOTA
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TACOMA
manuelloewe53
Sounds familiar. I had similar issues with my old Saab 9-3. Kept getting a check engine light. You said you checked the connections...did you try cleaning them?