Subaru engine light come on after a few kilometers and go off

bad fuel.
no year told, no maker or model told or engine size CC
clogged filters
bad spark plug(s)

With the engine off, press and hold the kilometer button while turning the key switch to the on position. Then release the kilometer button and turn kilometer button to the right. Turn key switch off. Now turn key switch back on and service key should be gone.

Look on YouTube you may find more answers there

May be misfire (spark plug & or wire)

your transmition may have bands slipping or sticking soliniods , need to get it serviced at auto trans shop .

These maintenance intervals come from the maintenance interval calculator
at www.autozone.com, using a starting point of 25,800 miles (43000 km), and
assuming 1000 miles (1666 km) driven per month, and "severe driving conditions," which
are actually normal usage characteristics, such as frequent short trips, urban driving, waiting in traffic, driving in hot weather, trips under 16 km in cold weather, etc.

STARTING MILEAGE: 25800 (43,000 Kilometers)
Item
Action
Service History

20000 miles or 32000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


21000 miles or 33600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


24000 miles or 38400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


25000 miles or 40000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


27000 miles or 43200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


30000 miles or 48000 kilometers

Battery Check
Air Filter Element Check
Wheel Bearing Lubricate
Steering and Suspension Lubricate
Fuel Filter Replace
Oil Filter, Engine Replace
Engine Oil Replace
Fluid - A/T Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Exhaust System Inspect
Steering and Suspension Inspect
Heat Shield, Exhaust Inspect
Tires Rotate


33000 miles or 52800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


35000 miles or 56000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


36000 miles or 57600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


39000 miles or 62400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


40000 miles or 64000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate



42000 miles or 67200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


45000 miles or 72000 kilometers

Battery Check
Steering and Suspension Lubricate
Fuel Filter Replace
Oil Filter, Engine Replace
Engine Oil Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Steering and Suspension Inspect
Tires Rotate


48000 miles or 76800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


50000 miles or 80000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


51000 miles or 81600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


54000 miles or 86400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


55000 miles or 88000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


57000 miles or 91200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


60000 miles or 96000 kilometers

Battery Check
Air Filter Element Check
Wheel Bearing Lubricate
Steering and Suspension Lubricate
Fuel Filter Replace
Spark Plug Replace
Fluid Filter - A/T Replace
Oil Filter, Engine Replace
Engine Oil Replace
Fluid - A/T Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Exhaust System Inspect
Steering and Suspension Inspect
Heat Shield, Exhaust Inspect
Tires Rotate


63000 miles or 100800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


65000 miles or 104000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


66000 miles or 105600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


69000 miles or 110400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


70000 miles or 112000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


72000 miles or 115200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


75000 miles or 120000 kilometers

Battery Check
Air Filter Element Check
Steering and Suspension Lubricate
Fuel Filter Replace
Oil Filter, Engine Replace
Engine Oil Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Steering and Suspension Inspect
Tires Rotate


78000 miles or 124800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


80000 miles or 128000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate



And you can continue the pattern from there...

this will give you some of the pro's and con's for that vehicle

http://consumerguideauto.howstuffworks.com/1998-to-2002-subaru-forester.htm

robert

Subaru use 10/40 semi synthetic in ALL their service centres in Europe/far east.

try disconnecting the + positive terminal for a few minutes and see if it goes out most likely the 02 sensor needs replacing ...however low fluid levels may also contribute to this oil,brake fluid etc.

Did the dealer read the code and find out what is was, or did they just reset it? You need to have the code read, so you know what the problem is. Once you know what is throwing the code you can replace that particular part or address it's issue. If that does not work, it could be something similar/related to the issue of the code. With having such little kilometers on the vehicle and the fact that it's only 2+ years old, I would think that the vehicle would still be under warrany. If it is under warranty, I would take the vehicle back the dealer and insist that the issue that is throwing the code be fixed. Resetting the code does nothing to address the issue. It could be possible that nothing is wrong with the vehicle and maybe an issue with the ECM/PCM, or the electronic brain for the vehicle.
Good luck and let us know how you do!