Fault Code of 7th Generation 3.0 Honda Accord Engine 1-6 Cylinder Irregular Fire

According to your description, this misfire fault is the misfire fault that caused the catalyst to be damaged. The misfire rate is calculated by taking 200 cycles of engine operation, that is, 400 cycles (four-cylinder engine) as a cycle. When the misfire rate exceeds the threshold set under this working condition and reaches the level of damaging the catalyst, the fault light will flash to remind the driver, and if necessary, the cylinder will be broken to protect the catalyst. Because one or two cylinders of a six-cylinder engine can still run in case of fire, there will be phenomena such as unstable power and idling jitter, which cannot be checked by the ECU software program 4S shop, so it can only be checked from the hardware such as spark plugs and whether the nozzles of individual cylinders are blocked.