How do you read the codes on a 1994 Ford Aspire?

To read the codes on a 1994 Ford Aspire, you'll need an OBD-I scanner or a code reader compatible with older vehicles. Locate the diagnostic connector, which is typically found under the dashboard near the driver's side. Once connected, turn the ignition to the "On" position without starting the engine, and the scanner will display any stored trouble codes. Alternatively, you can use a jumper wire to connect specific terminals in the connector and count the flashes of the Check Engine Light to retrieve the codes manually.