Car sometimes will not start after sits for a day
Definition of Diagnostic Trouble Code P0420
Catalyst System Efficiency Below Threshold Bank 1Note: This definition of P0420 is applied to all manufacturers
Definition of Diagnostic Trouble Code P0430
Catalyst System Efficiency Below Threshold Bank 2Note: This definition of P0430 is applied to all manufacturers
As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0430 code is combined with other codes, try fixing the other codes first.
Jul 11, 2015 |
2006 Toyota Solara