What are you trying to accomplish? Perhaps describing the problem you're experiencing will help determine the actual solution. For example, are you trying to:
* Clear a fuel efficiency calculation? The average fuel economy is typically automatically reset after a certain period of time or when the battery is disconnected.
* Fix a fuel gauge problem? This requires checking the gauge itself, wiring, and potentially the fuel sending unit in the gas tank.
* Resolve a starting or running issue? This could be due to many problems, such as a bad fuel pump, clogged fuel filter, or other issues needing professional diagnosis.
Please clarify the problem you are facing.