Zak is new to the CarBuzz team, working as a freelance content writer. When Zak isn't writing How To articles for CarBuzz he's working as a high school automotive technology instructor. Before ...

Answer:You have two catalytic converters on the Nissan Pathfinder 3.5-liter, one for each three-cylinder bank of the engine. Typically engine bank 1 is the side including cylinder #1. In your case, it ...

Q: I have a 2010 Honda CR-V. Last month its check engine light came on. I'm a retired mechanic and my scanner found code P0420 — catalytic converter efficiency. I tried a catalytic converter cleaner.

Answer:That's a new one for me, and I cannot see it having any effect on preventing a P0420 DTC, but it is illegal. P0420 indicates the catalytic converter has lost its efficiency in reducing harmful ...

My 2005 Nissan Altima's "Service Engine Soon" light has turned on twice in the past month. A diagnostic test indicates that my catalytic converter is "failing". If I don't have the converter replaced ...

Thanks to modern fuel injection, the engine computer has extremely precise control over the proportions of the air/fuel mixture inside the cylinders. A countless number of sensors around the car tell ...

Q: I have a 2010 Honda CR-V. Last month its check engine light came on. I’m a retired mechanic and, using my diagnostic scanner, found a trouble code of P0420, which indicates an issue with catalytic ...

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