I am having the same problem. Car mileage is about 9 to 10 / liter.
Guys at (Magic Motors A Block Model Town Lahore, Beside Gourmet Bakers) are trying to fix the issue.
They scanned my Car and find that o2 sensor is the cause of engine light.
After that they reset the programing now no more engine light is there.
Next step is to change the o2 sensor if it is not working properly.