The EPC light turned on, and now my car won't start.
The EPC light is indicating a fault in the electronic throttle control system. The best way to narrow down the issue is to read out the fault codes in the engine management system; there could be issues with the throttle position sensor, or an issue with the throttle motor, etc. You may want to enlist the help of a mechanic, such as one from YourMechanic, to inspect the throttle control system, and properly diagnose the cause of your car not starting.
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