Code P0430

2003 HONDA ACCORD
194,645 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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JABAFLAB
  • MEMBER
  • 1 POST
Catalyst system efficiency below threshold bank 2.
How would you start to pin-point this?
Mar 1, 2020 at 10:32 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good morning,

This code indicates a bad catalytic converter. The insides are worn out and it cannot process the gases anymore.

Here are some guides that will help with this.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

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

https://www.2carpros.com/articles/catalytic-converter-replacement

This is a very common issue.

Roy
Mar 2, 2020 at 7:12 AM