Home >> Mini >> 2007 >> Cooper Base, 2D Convertible, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnostic Trouble Codes - GSAW56 Control Unit >> Diagnostic Trouble Codes (GSAW56 Transmission Control) >> DTC P1791, BMW Hex Code 0x4FB1, BMW Code 20401: Internal Transmission Control Module Memory Check Sum/EEPROM Error >> Temperature conditions