Hyundai automatic, sport mode not working The sports mode on the automatic transmission do engage but it does not want to shift up or down. It does however revert back to auto "D" on the instrument panal. Any idea what is causing this?

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The engine and transmission in this cars drivetrain is fully electronically controlled by a computer called the PCM (Powertrain Control Module). Whenever a problem like this occurs the computer stores a record of the problem in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s)

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