2000 Honda Accord DX 2.3L 4cyl, Check engine light is blinking. No compression in cylinder.

SOURCE: 2003 kia sedona rough idle--check engine light

The only thingI can say is that there is a problem that is affecting the entire bank on one side of the engine. This automatcally eliminates things like Mass Air Flow (MAF) sensor, Manifold Absolute Pressure (MAP) sensor, Throttle Position Sensor (TPS), Crankshaft Position Sensor (CKP) etc. because failure of these things will affect BOTH banks, not one.

I have seen things like a totally skewed upstream Oxygen sensor on one side cause misfire codes for all cylinders on one bank. It is pretty rare, but it CAN happen. This can usually be verified by graphing the O2 Sensor PIDs for both sensors and comparing the graphs.

If the scaner data should be showing SOMETHING that is not right on one side - i.e. fuel trims, injector pulse width, etc.
I would also be looking into the possibility of one of the cams on that side to be 1 tooth off of the correct timing. This can cause problems while the engine is running and will not necessarily show up on a cranking compression test. One way to verify this is to perform a RUNNING compression test. With a warmed-up engine, pull one spark plug out at a time and check the compression with the engine running. Do BOTH sides, so you can compare the readings. If the entire 1-3-5 bank is lower than the 2-4-6 bank, then valve timing is most likely the cause.

SOURCE: Misfire on cylinder 1 and 3

Do you observe abnormal idle speed? It may be just an indicator fault; not a really engine firing problem.
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SOURCE: 2000 Honda Accord EGR Valve Error P0401

Jason,
-after you change the part you have to reset/clear the code

-this can be done by either:
(1) using the OBD2 code reader that Autozone used OR since option 2 (below) is very quick
(2) disconnecting the battery for about 30 seconds (this will delete all codes/radio presets/etc) but it will also clear the 'check engine' code
-this is what I do AFTER i write down my radio station presets :)

-hopefully the new EGR valve resolves your issue after you CLEAR the code
...but that code just means a an insufficient amount of Exhaust Gas recirculation (pressure difference) used to keep the emissions in check
-if it comes back, then there are a few other fixes to try also

-let me know if you need further assistance
-please remember to rate me `fix-ya`if it works
thanks

SOURCE: Check engine & maintenance required lights on

My maintenence required light comes on when it's time to change the oil.

SOURCE: miss fire on cylinder 1 and 2 coils replaced

have u put a new set off leads on it as mite be brakeing down under pressure