The procedure to erase stored diagnostic codes is as simple as removing a fuse or disconnecting the battery negative terminal for at least thirty seconds. Fuse removal is the method of choice because it will not disturb any other computer memories in the vehicle (eTr radio stations, trip computer data, etc.)
The proper fuse to remove depends on application but will always be the one which feeds the ECU BATT terminal. The following fuses supply BATT power distribution to the ECU keep alive memory: EFI, STOP, or on some P7 applications, ECU +B.
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