Ошибка P0667: блок управления Internal температура датчик A сигнал вне диапазона

Control modules measure their own circuit board temperature with an internal sensor to protect output stages (overtemperature is P0634) and, in GM transmission modules, as a substitute for fluid temperature. In GM's 6T70/6T75 and related automatics the sensor sits in the transmission module inside the valve body, with no external wiring – so the repair is practically always the module or valve body assembly. P0667 is the plausibility check: GM compares the module (substrate) temperature with the transmission fluid temperature and the temperature measured at power-up. The Saab 9-4X sets it when, within 5 of 6 minutes, fluid and substrate differ by more than 20–50 °C and power-up and substrate by more than 8–10 °C (two trips); GM's 2019 table uses 3000 of 3750 samples. The module then uses the power-up temperature instead. Check the fluid temperature sensor (P0711) first – it is the comparison partner.