Tucson transmission problem Code 1728.

Everything has been tested, nor can the house solve, the vehicle apparently has no operational problems, but the fuel consumption is very high, the focus of the transmission is turned on and turns off all the time the code is 1728. It is erased and appears again.

1728 It is the code is rare because in Hyundai 1728 does not leave 1715 and 1750 but that code is strange to me X The consumption of gasoline can be an injector or more open or the MAF that regulates gasoline has to check that or the gasoline precion regulator that carries or in the injectors or inside the gasoline pump

Greetings Beniisaias, P1728 Hyundai - EMC -Open/Short To Battery, refers to an open or short circuit with respect to the 12V (battery), have you made some new electrical installation in the vehicle? Carefully check the electrical installation of the engine for cable damage and where the ECU is, you have a scan and monitor the sensors, perform a test return while observing the behavior of the sensors (it is possible that some sensor is without current or short -circuited), check the installation of the transmission, tell us how it went, luck.

We have finished checking the car wiring everything is normal ... the problem apparently is in the 4WD. How could you check it without disarming the transmission ...