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P06AC 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 Transmission Control Module uses an internal sensor to record the modules temperature on startup. If the temperature does not change at least 2 degrees within the first 2 minutes of startup, code P06AC will set.
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OBD-II Code Transmission Control Module (TCM) failure is defined as a PCM/ECM/TCM Internal Temperature Sensor "B"
The Transmission Control Module uses an internal sensor to record the modules temperature on startup. If the temperature does not change at least 2 degrees within the first 2 minutes of startup, code P06AC will set.