The fault light indicates the existence of a failure or an anomaly in motor management. If the engine starts and does not sound weird, you can circulate to the nearest official workshop or service.
If the engine does not start or be able to move the car, or it comes out a lot of smoke or any other "visible" symptom that something is not going well, it is better that the journey do it in crane. (That for that is insurance)
the fault light carries with it a memory memory only visible through a diagnostic taking. Depending on the failure that has the switchboard and motor behavior memorized (real values measured with the engine running), the mechanic will get an idea of what happens to it.
While the fault light remains on, the switchboard limits the power of the engine to avoid major damage, this is called "recovery" or "degraded zone" and you will notice because consumption is relatively high and the car has no strength.
All the best.
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