The fault code P0732 OBDII is set on vehicles with automatic transmission, and it has to do with a problem when shifting into second gear or driving in second gear. The automatic transmission, which is controlled by the vehicle’s computer, uses several gear ratios to increase vehicle speed as engine output increases.
To check the proper functioning of the transmission and its components, the Powertrain Control Module (PCM), Engine Control Module (ECM), or Transmission Control Module (TCM) use the input of various sensors. Usually, the engine speed is calculated by the Transmission Speed Sensor (TSS) and the ratio of the transmission and torque converter slip is determined. If the calculation is not within the expected range, the DTC code P0732 OBD2 is set.