2009 honda civic turn signal flashes real fast

SOURCE: TURN SIGNAL BLINKS TO FAST RIGHT

The blinker usually blinks fast when a turn signal light is burnt or not contacting. Check the signal bulbs to see if they are contacting or in good condition. If that is not it. Try replacing the blinker under the dash.

SOURCE: turn signal is real slow

Sounds like the turn signal relay is weak. Change out the turn signal relay and make sure all your lights are good.

SOURCE: Rear Turn siganls flash fast, both front signals will not flash

The blinker sockets on most olds cars are bad. Pull out blinker bulb from your car and check if the plastic is melted; if it is you must replace the socket along with the bulb. Chances are it will melt again someday but not soon I think.- COACH....

SOURCE: i have a 2001 dakota turn signals are flashing

check grounds then signal switch-oh but dont forget dodge have a body computer that controls all lights fron the switches with on-off or resisted signals-my advice go to a dodge repair outlet,will save you time and money

SOURCE: i have a code flashing on my ecu for a honda

This is from the first or second google search for "honda civic ecu codes". I'm actually going through this myself.
EF Ecu Trouble Codes
Reading EF ecu Trouble codes
Reading them's pretty simple. When there is a long flash this indicates tens and a short flash indicates ones.

Look under the Passenger seat (under the passenger kick panel for flashing LED - engine code. Short the plug under there.

For example: Flaaaaaash Flaaaaaash Flash = code 21
Flaaaaaash Flash = code 11
Flash Flash = code 2

1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor
2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor
3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor
4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor
5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping
6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor
7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor
TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor
9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor
10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor
12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor
13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor
14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor
15) Ignition Output Signal - Missing or defective ignition output signal
16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector
17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor
19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.
20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor
21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid
22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch
23) Knock Sensor - Defective circuit or unplugged / Defective sensor
30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor
31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor
41) Primary Oxygen Sensor Heater- Circiut malfunction
43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem
45) System too lean or too rich - Malfunction in the fuel monitoring systems
48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor
54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor
61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response
63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response
67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system
70) Automatic Transmission - Malfunction with Automatic Transmission Controls
71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire
80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected
86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem
90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area
91) Fuel Tank Pressure Sensor- Low Input
92) Evaporative Emission Control System Control System- Insufficient Purge Flow

Ask your autoparts store how much the parts are and decide if it has a point to even do it, its a 19 year old car. You should also ask if that employee works on the side and would do it for you, if you aren't comfortable.