Catalytic Converter on 1998 Honda CR-V

Check engine light stays on - Checked code and it shows emmission.

Are there things that I check before replacing the Caftalytic Coverter? The CR-V has 200.000 mile.

Asked by for the 1998 Honda CR-V
That year CRV I would check the valve clearances (they tighten up and burn valves) look at O2 sensors and after that if the engine has no misfire it may well be likely the cat. converter may have failed.