Glossary / General

oxygen sensors

21 Episode Mentions

Too Afraid to Ask

These small devices check how much oxygen is in the exhaust. The car’s computer uses that info to mix fuel and air just right, keeping the engine running cleanly.

Technical Definition

Oxygen sensors measure the amount of oxygen in a vehicle’s exhaust gases, allowing the engine control unit to adjust fuel delivery for optimal combustion and emissions.

Hear It Discussed

"And then the other warning that we got is that that might damage the oxygen sensors. Oh, you're going to unplug the oxygen sensors? You won't be using them."
#2633: Hacker Heaven The Best of Car Talk 35:01

"[3259.0s] oxygen sensors [3260.1s] you don't want to get contamination"
Under The Hood - LIVE Show Automotive Experts Giving You Advice Under The Hood show 54:19

"Now, some parts, like oxygen sensors are really sensitive to contamination. If you get grease oil on the connector, you know, how do you clean it off?"
Ron Ananian, The Car Doctor - May 16, 2026 - Hour 1 Ron Ananian The Car Doctor 23:33