What check engine error code is this based on blinks? 93 honda civic?

I was looking up how to read my check engine light through a series of blinks. This is what i got

4 long blinks
3 short blinks
A 3 second pause
Then 1 short blink

can can someone help me determine what error code am having with my car

According to the source 43 is "Fuel Supply system - left side" and 1 is "Oxygen sensor circuit"
Both seem to agree there's something wrong with the O2 sensor circuit.