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How do you reset engine Light on 1991 Volvo 240 DL?

To reset the engine light on a 1991 Volvo 240 DL, you can follow these steps:

1. Disconnect the negative terminal of your battery and leave it disconnected for at least 30 minutes. This will reset the car's electronic control unit (ECU) and clear any stored codes.

2. Once the ECU is reset, you can reconnect the negative battery terminal. Start the car and let it run for a few minutes.

3. If the check engine light stays on, it means there is still a problem that needs to be addressed. You can use an OBD-II scanner to read the diagnostic trouble codes (DTCs) stored in the ECU. This will help you identify the source of the problem.