Average Fuel Economy

Average Fuel Economy (AFE) is calculated as the ratio between the following values:
^ AFE=Distance/Fuel
^ Distance=The accumulated distance since the last AFE reset
^ Fuel=The accumulated fuel consumption since the last AFE reset

The DIC receives an UART message from the PCM. You can reset the AFE mode by pressing the Reset button on the DIC. The value of this mode is retained during ignition OFF. If the AFE does not appear in the DIC there is a problem with the UART serial data line. Refer to Scan Tool Does Not Communicate with UART Data Line in Data Link Communications.