As you do not list the code you are reading, it is impossible to answer your question.
I have never heard of a code 24 on a Honda.
Code 41 means: HO2S Heater
Code P0780 means: A/T Concerns
cb7 = chassis code for the fourth generation(1990-1993) honda accord
code p2647 is oil pressure switch is that correct
Code 43 is a problem in the fuel delivery system.
Left Front Fuel Supply System circuit fault
Trouble code P0135 means: O2 Heater Circuit (Bank 1, Sensor 1)
where is the plug to conect the code reader on a 1990 Honda accord
Take a look at the lift sensor mounted on the left front fender.
there is not a scanner port on 87 hondas, the ecu will flash the code from the led on top of the computer. dachonda
I have a 1990 Honda accord ex and my check engine light the car goes form a high rev to a low rev when I first turn on the car. Is this a vacume line problem or a voltage problem?