2000 Honda Civic EX P0420: Did a Failed Distributor Cause Catalytic Converter Failure?
My 2000 Honda Civic EX experienced a distributor failure, resulting in no spark and the engine only cranking without starting. After replacing the distributor, two days later the check engine light activated with code P0420. I'm concerned whether the faulty distributor could have caused fuel contamination or damage to the catalytic converter. Since the distributor is responsible for ignition timing, a failure might lead to incomplete combustion and increased emissions, potentially affecting the catalyst's performance.
Looking for information on whether raw fuel from misfiring could have damaged the catalytic converter. A common suggestion is to perform a long drive to heat up the catalytic converter, which may help clear any accumulated contaminants and potentially reset the P0420 code. However, if the issue persists, a diagnostic scan tool is needed to confirm whether the problem lies in the converter or elsewhere. More details available at: http://www.obd-codes.com/p0420