Honda Repair Questions? Ask a Mechanic for Answers ASAP
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Was the fault code P0420? How many miles on your vehicle?
Basically the engine management ECU will run a test on the converter during a drive cycle. The cat monitor cycle involves driving on the highway at a steady speed for an extended period of time. If the light does not come back on then this does not mean the converter is not faulty. If the light or code returns then you will need to replace the converter.
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