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Richard, Acura Technician
Category: Acura
Satisfied Customers: 15545
Experience:  ASE certified technician
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How do I replace the oxygen sensor on my 2003 Acura rsx

Customer Question

How do I replace the oxygen sensor on my 2003 Acura rsx
Submitted: 8 years ago.
Category: Acura
Expert:  Richard replied 8 years ago.

Hello and welcome to


You will need an oxygen sensor socket to remove the sensor. The size is 7/8" or 22mm but they will usually be too tight for just a wrench. The air/fuel sensor is the front sensor before the cat converter on the exhaust and the secondary oxygen sensor is the one in the cat converter.