B0161 BUICK - Ambient Air Temperature Sensor Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B0161 Buick Possible Causes

  • Faulty Ambient Air Temperature Sensor
  • Ambient Air Temperature Sensor harness is open or shorted
  • Ambient Air Temperature Sensor circuit poor electrical connection

B0161 Buick Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B0161 Buick Meaning

The Driver Information Center (DIC) applies 5 volts to the ambient air temperature sensor. The ambient air temperature sensor is a thermistor which varies in resistance as the temperature changes. As the resistance of the ambient air temperature sensor increases, the DIC senses a larger voltage drop across the sensor, indicating a lower temperature. As the resistance of the ambient air temperature sensor decreases, the DIC senses a smaller voltage drop across the sensor, indicating a higher temperature.
OBDII Code B0161 Buick - Ambient Air Temperature Sensor Low - Engine-Codes.com

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