I apparently dropped a small piece of vinyl hose in the passenger side engine bay, which ended up resting on, and then melting on the pictured part when I turned the engine on. I removed the hose when I noticed the smoke. The smoke was from the hose, not the part. The car otherwise works fine, but I don't recognize this part. So, I don't know if I should be worried or plan to repair it.

Picture of Unknown Part

  • Welcome to Motor Vehicle Maintenance & Repair! Aug 15, 2018 at 16:35

2 Answers 2


It is an oxygen sensor (lambda sensor). Nothing to worry about.

  • Yup. Don’t need to do anything here. It may smell bad for an hour or so. Absolutely nothing to worry about.
    – zipzit
    Aug 15, 2018 at 18:38

Looks like a sensor on the exhaust manifold. Try to scrape off the plastic with a knife (to get rid of the smell), the sensor will be fine.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .