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How to Deal with P0430 Trouble Code?

1 Answers

TimothyLynn

07/29/25 3:23pm

p0430 trouble code can be handled by: 1. Using a diagnostic tool at a repair shop to check for corresponding trouble codes; 2. Inspecting whether there are issues with the relevant circuit connections; 3. If confirmed to be an oxygen sensor problem, the oxygen sensor needs to be removed and returned to the supplier for detailed testing and analysis. The P0430 trouble code indicates that the catalytic converter system efficiency is below the threshold, which could be due to catalytic converter failure or oxygen sensor issues. The reasons for catalytic converter failure include: 1. Loss of activity of rare metals on the surface, rendering them unable to catalyze; 2. The three-way catalytic converter being exposed to high temperatures for extended periods, leading to high-temperature deactivation; 3. Blockage caused by ethanol gasoline gum carbon deposits sintering, sulfur-phosphorus chemical complex sintering, lead-manganese metal deposits sintering, or ceramic carrier melting and blockage due to engine exhaust flames.

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