P0711 BUICK – Transmission Fluid Temperature Sensor Circuit Range/Performance

 

P0711: DIY Repairing Video Tutorial

https://youtu.be/8tQ9DrSJMno

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P0711 BUICK Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),Possible shifting problems  

P0711 BUICK Possible Causes

  Faulty Transmission Fluid Temperature Sensor,Transmission Fluid Temperature Sensor harness is open or shorted,Transmission Fluid Temperature Sensor circuit poor electrical connection  

P0711 BUICK Description

  The Automatic Transmission Fluid Temperature (TFT) sensor is a resistor, or thermistor, which changes value based on temperature. The sensor has a negative-temperature coefficient. This means that as the temperature increases, the resistance decreases, and as the temperature decreases, the resistance increases. The Powertrain Control Module (PCM) supplies a 5-volt reference signal to the sensor and measures the voltage drop in the circuit. When the transmission fluid is cold, the sensor resistance is high and the PCM detects high signal voltage. As the fluid temperature warms to a normal operating temperature, the resistance becomes less and the signal voltage decreases.