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2005 Honda Accord P0420

Tiny
ED-WEEZY21
  • MECHANIC
  • 2005 HONDA ACCORD
  • 3.0L
  • V6
  • FWD
  • AUTOMATIC
  • 161,000 MILES
I have a check engine light and got P0420. I know it needs a catalytic converter but I'm not entirely sure sure which one. It just says bank 1. Can anyone help me please?
Saturday, April 4th, 2015 AT 6:04 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Bank one is the rear bank.
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Saturday, April 4th, 2015 AT 7:20 AM
Tiny
ED-WEEZY21
  • MECHANIC
  • 248 POSTS
So that would be the firewall side upper cat correct? It might be part of the manifold. I haven't checked.
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Saturday, April 4th, 2015 AT 7:29 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Yes, firewall side but if it has more than one cat in the area, it will be the one with an 0/2 sensor on either end of it. Some cars have a secondary cat further down that is not monitored.
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Saturday, April 4th, 2015 AT 7:34 AM

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