System: Transmission · Standard: SAE J2012 generic code · Severity: Repair soon
The car will usually keep running, but continued driving risks secondary damage or an emissions failure. Book the repair.
Without input speed the controller cannot calculate slip, so it defaults to fixed line pressure and harsh shifts.
Start by reading every stored and pending code, not just this one. A single fault frequently sets three or four codes at once, and the first one in the freeze-frame data is usually the cause while the rest are consequences.
The transmission input speed sensor is not returning a usable signal. Input/Turbine Speed Sensor Circuit Malfunction is a generic transmission code defined by SAE J2012, so it carries the same meaning on every OBD-II vehicle.
Repair soon. The car will usually keep running, but continued driving risks secondary damage or an emissions failure. Book the repair.
In rough order of how often they turn out to be the problem: Failed input speed sensor; Wiring fault; Debris on the sensor.
P0700 Transmission Control System MalfunctionP0720 Output Speed Sensor Circuit MalfunctionP0730 Incorrect Gear RatioP0740 Torque Converter Clutch Circuit MalfunctionP0741 Torque Converter Clutch Circuit Performance or Stuck OffP0750 Shift Solenoid A MalfunctionCode number, system and definition follow the SAE J2012 / ISO 15031-6 generic diagnostic trouble code standard. Symptoms, causes and severity are the standard generic diagnostic logic for that fault. This page does not contain manufacturer-specific procedures, part numbers or pricing.