The 2001 Honda Odyssey has two different catalytic converters on the exhaust. There is a primary cat and that is the most likely one to fail, and then there is a secondary that usually does not have any problems. If Your catalytic converter is failing You will usually get a check engine light on Your dash. This is usually caused by the vehicle's O2 sensors detecting exhaust gasses that are out of the normal range. Replacing a catalytic converter can get very expensive due to the precious metals that are used in them. You should probably change the O2 sensor first to make sure that it is not a problem with the sensor instead of the cat.
Eric white
April 9, 2020
How many catalytic how many catalytic converters does a 2002 Honda Odyssey van have
Jack M.
August 29, 2019
The 2001 Honda Odyssey has a three-way catalytic converter. The three-way catalytic converter contains precious metals that serve as catalysts, promoting chemical reactions to convert the exhaust gasses without affecting the metals. The catalytic converter is referred to as a three-way catalyst, since it acts on HC, CO, and NOx.
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