What seemed like a cheap fix turned into an expensive lesson. See why this O2 sensor spacer hack failed and what happened next. #CarRepair #MechanicLife #Automotive ...

I had a test done at local auto-parts store that showed a code of PO138. They told me this indicates a problem with the oxygen sensor. I replaced the oxygen sensor and the light never went out. I ...

The check engine light has always been a bit of a gamble. Sometimes it’s a loose gas cap. Other times, it’s a four-figure reminder that modern cars are way more complex than they need to be. What’s ...

Oxygen sensors play an important role in your car's engine, but they aren't like many other components, such as oil filters, for which automakers provide a strict service schedule. Instead, the real ...