Quote:
Originally posted by bionictony
the check engine light in my civic came on when i was driving on the highway at around 70mph. what could be wong? my car is at 141,000miles.. the oil has been changed and doesnt leak.. coolant is ok. radiator is new..
it lights up and stays on when i drive a couple of miles. what could be wrong? could it be the oxygen sensor or something? how would i be able to fix it?
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When your check engine light comes on, your ECU will throw a trouble code... to find out what code it is, you have to pull back the carpet on the passenger side foot-well where the ECU is mounted. Then, you put the key in the ignition and turn it to the 2nd position (don't start the engine), and there's an LED mounted on the ECU that will blink. Count how many times the LED blinks and that is the code:
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