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P0669 Severity
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
The engine control module (PCM) and/or Transmission Control Module has a temperature sensor built in to prevent the module from overheating. If the control module cannot accurately determine its own temperature, it will set code P0669.
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OBD-II Code Transmission may not shift properly is defined as a PCM/ECM/TCM Internal Temperature Sensor "A" Circuit High
The engine control module (PCM) and/or Transmission Control Module has a temperature sensor built in to prevent the module from overheating. If the control module cannot accurately determine its own temperature, it will set code P0669.