Impreza WRX F4-2.0L DOHC Turbo (2004)
Malfunction Indicator Lamp: Description and Operation
ACTIVATION OF MALFUNCTION INDICATOR LIGHT
1. When the ignition switch is turned to ON (engine off), the malfunction indicator light in the combination meter illuminates.
NOTE: If the malfunction indicator light does not illuminate, perform diagnostics of the malfunction indicator light circuit or the combination
meter circuit.
2. After starting the engine, the malfunction indicator light goes out. If it does not, either the engine or the emission control system is malfunctioning.
3. If the diagnosis system senses a misfire which could damage the catalyzer, the malfunction indicator light will blink at a cycle of 1 Hz.
