Activation Of Malfunction Indicator Light

When the ignition switch is turned to ON (engine OFF), the malfunction indicator light (A) 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. Refer to MALFUNCTION INDICATOR LIGHT DOES NOT COME ON .
- Normal meter
  
  Fig 1: Identifying Malfunction Indicator Light (Normal Meter)
  Courtesy of SUBARU OF AMERICA, INC.
- Luminescent meter
  
  Fig 2: Identifying Malfunction Indicator Light (Luminescent Meter)
  Courtesy of SUBARU OF AMERICA, INC.
After starting the engine, the malfunction indicator light goes out. If it does not go off, any of the engine and emission control system has malfunction.

Fig 3: Malfunction Indicator Light Pattern
Courtesy of SUBARU OF AMERICA, INC.
If the diagnostic system detects a misfire which could damage the catalyst, the malfunction indicator light will blink at a cycle of 1 Hz.

Fig 4: Malfunction Indicator Light Pattern (Misfire Detected)
Courtesy of SUBARU OF AMERICA, INC.