Control unit is not on

  • Vehicle can operate normally even when eFlexFuel control unit is not on. You should use only gasoline if this happens.
  • Check wiring harness and all the connectors. Especially ground wire and red double wire.
  • Check that ground wire is in ground place.

Ethanol sensor is not in fuel line

  • Ethanol sensor is installed to breather hose. Ethanol content is 0%.

Ethanol sensor does not get fuel

  • Ethanol sensor is installed to return fuel line. In some vehicles return line can be empty when accelerated heavy.