1988-1991 HONDA CRX The ECU is located at the front of the passenger footwell, under the carpet. There is a single flashing light in the center of the ECU that flashes the codes. Simply count the flashes in each sequence to determine the code. Code 0______Faulty ECU Code 1______Oxygen content Code 2______Does not appear to exist Code 3______MAP sensor Code 4______Crank angle sensor Code 5______MAP sensor again Code 6______Coolant temperature Code 7______Throttle angle Code 8______Top dead center sensor Code 9______No. 1 cylinder position(only on 1.6L) Code 10_____Intake air temperature Code 11_____Does not appear to exist Code 12_____Exhaust gas recirculation system Code 13_____Atmosphric Pressure Code 14_____Electronic air control (EACV) Code 15_____Ignition output signal Code 16_____Fuel injector Code 17_____Vehicle speed sensor Code 18_____Does not appear to exist Code 19_____Lock up control solenoid (auto trans only) Code 20_____Electric load |