1. Purchase or rent a scan tool that is compatible with your vehicle.
2. Connect the scan tool to your vehicle's diagnostic port.
3. Turn on the ignition but do not start the engine.
4. Follow the instructions on the scan tool to retrieve the fault codes.
Method 2: Using the self-diagnostic mode
1. Turn the ignition key on but do not start the engine.
2. Press the "Trip" button on the instrument cluster until the odometer displays "TEST".
3. Press and hold the "Trip" button for at least 3 seconds.
4. The fault codes will be displayed in a series of five digits. Each digit represents a different part of the fault code.
Here is what each digit means:
- Digit 1: The first digit of the fault code indicates the vehicle system.
* 0 = Powertrain
* 1 = Chassis
* 2 = Body
* 3 = Network
- Digit 2: The second digit of the fault code indicates the fault type.
* 1 = Sensor circuit
* 2 = Fuel or spark control circuit
* 3 = Ignition or idle control circuit
* 4 = Emission control circuit
* 5 = Vehicle speed or transmission circuit
* 6 = Electrical circuit
* 7 = Powertrain accessory circuit
* 8 = Climate control circuit
* 9 = Information and communication circuit
- Digit 3: The third digit of the fault code indicates the specific fault.
- Digit 4: The fourth digit of the fault code indicates the emissions impact of the fault.
* 0 = No impact
* 1 = Minor impact
* 2 = Moderate impact
* 3 = Major impact
- Digit 5: The fifth digit of the fault code indicates the priority of the fault.
* 1 = High priority
* 2 = Medium priority
* 3 = Low priority
Once you have retrieved the fault codes, you can look them up in a repair manual to find out what they mean and how to fix them.
