1. Disconnect the negative battery terminal: This will cut power to the ECU and clear any stored codes.
2. Wait for 15 minutes: This will allow the ECU to completely reset itself.
3. Reconnect the negative battery terminal: This will restore power to the ECU.
4. Start the engine: The engine light should now be off.
If the engine light remains on, you may need to have the ECU reprogrammed by a qualified mechanic.