Let me explain what your check engine light is for and what you need to do.
When the check engine light comes ON when the engine is running then this is an indication to the driver that the fuel injection (diesel or petrol) system has a malfunction and has stored a malfunction code in the management system (ECM)..
Now if the check engine light is not flashing, then you are still okay to drive your car until you have time to make an appointment at your local repair shop or dealership.
If it is Flashing you need to get to the dealers as soon as possible to avoid any engine damage .
What they will do is connect a scan tool to the system and check for malfunction codes ..
From the found malfunction codes the technician will then know what has malfunctioned and give you advice on what action should be taken to repair this issue ..
When the repairs have been completed the codes will be deleted and a test drive done covering all drive cycles to make sure the check engine light does not come back on.
If repairs are good the light will stay OFF ,if it comes back on then further diagnosis must be done ..
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Kind regards Greg