If the light illuminates steadily
If the light illuminates steadily while driving or does not turn off after the engine starts, an emission control system malfunction has been detected.
You should have your vehicle checked by an authorized SUBARU dealer immediately.
NOTE
This light also illuminates when the fuel
filler cap is not tightened until it clicks.
If you have recently refueled your vehicle, the cause of the CHECK ENGINE warning light/malfunction indicator lamp coming on could be a loose or missing fuel filler cap.
Remove the cap and retighten it until it clicks. Make sure nothing is interfering with the sealing of the cap. Tightening the cap will not make the CHECK ENGINE warning light turn off immediately. It may take several driving trips. If the light does not turn off, take your vehicle to your authorized SUBARU dealer immediately.
See also:
Exterior
1) Engine hood
2) Headlight switch
3) Replacing bulbs
4) Wiper switch
5) Moonroof
6) Door locks
7) Tire pressure
8) Flat tires
9) Snow tires
10) Front fog light switch
11) Tie-down hooks
...
Vehicle Dynamics Control system monitor
Refer to “Vehicle Dynamics Control warning
light/Vehicle Dynamics Control operation
indicator light” and “Vehicle
Dynamics Control OFF indicator light”. ...
To engage the service mode
Turn the ignition switch to the “ON”
position, depress and hold the brake
pedal, then press and release the “”
button on the remote control transmitter
three times. The system will pause for 1 ...