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.
P0700 always has a companion code stored in the transmission module. Read transmission codes before doing anything else.
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 controller has reported a fault to the engine controller. This is an informational code, not the root cause. Transmission Control System 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: Any fault stored in the transmission control module.
P0715 Input/Turbine Speed Sensor Circuit 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.