Bank 2 catalytic converter replacement

ETERNALARIANNE

MEMBER
2011 HONDA ODYSSEY
3.5L
V6
2WD
AUTOMATIC
201,850 MILES

According to maintenance records, bank 1 catalytic converter was replaced at 188,888 miles but bank 2 was not (dealer only had bank 1 in stock). Dealer cleared codes and it's been fine until yesterday. Now I'm getting a check engine light and code reader is showing its bank 2 below efficiency.

How difficult would it be to replace the bank 2 catalytic converter myself? I tried watching a video and it mentions having to remove the front bumper?

3 Replies

SQM

MECHANIC
6,383 POSTS

Hello,

In order to replace the bank 2 catalytic converter, you will have to remove the front bumper as well as the A/C condenser and the radiator. Which will require you to drain the radiator and evacuate the A/C system.

Keep in mind that many times the efficiency codes are due to a faulty oxygen sensor and not the catalytic converter.

Here is a guide on how to test the catalytic converter:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Do you know exactly what code you have got for this?

I have attached replacement steps for the bank 2 catalytic converter as well as the bumper removal procedure below for your reference.

Please let me know if you have any questions.
Thank you.

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