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1. Turn the key to "on" but don't start the engine
2. Clear any current messages by pressing the rest button
3. Hold the "options" button down and press the "Fuel" button 4 times
4. The computer will start displaying all of the codes. Have a pen and paper ready so you can write down all of the codes. Any code with a "H" is a history code.
5. Once the computer is finished press the reset key to enter Manual Configuration
6. To reset the codes press the reset button
7. Press the options button to advance to the next module
8. Repeat step 6 to clear all of the codes