throwing a code

ok so my 89 lx civic started to throw code. can you tell me what one it is. what is is throwing is six quick blinks pause then seven quick blinks.
please help

ok so my 89 lx civic started to throw code. can you tell me what one it is. what is is throwing is six quick blinks pause then seven quick blinks.
please help


Code System

Code 1 (1 flash) Oxygen content

Code 3 or 5 Manifold absolute pressure

Code 4 (4 flashes) Crank angle sensor

Code 6 (6 flashes) Coolant temperature

Code 7 (7 flashes) Throttle angle

Code 8 (8 flashes) TDC position (top dead center) timing

Code 9 (9 flashes) No. 1 cylinder position (1.6L)

Code 10 (10 flashes) Intake air temperature

Code 12(12 flashes) No code 11 don't know why. Exhaust gas recirculation system

Code 13 (13 flashes) Atmospheric pressure

Code 14 (14 flashes) Electronic air control (EACV)

Code 15 (15 flashes) Ignition output signal

Code 16 (16 flashes) Fuel injector

Code 17 (17flashes) Vehicle speed sensor

Code 19 (19 flashes) No code 18 for some reason Lock up control solenoid valve

Code 20 (20 flashes) Electric Load

so does the ecu flash when there are no codes?

once when you turn the ignition on