DTC 18158
DTC 18158 / P1750
Note:
For DTC 18158 / P1750:
^ Requirement for malfunction recognition: Battery voltage smaller than 9 Volts transmission shifts into emergency running mode.
^ When vehicle voltage (terminal 30) fails, application values are lost, i.e. Transmission Control Module (TCM) must learn these values again when vehicle is started. During this renewed "learning", shifting quality may be lower than normal.