AutoCodes - OBDII Code List - B0161

B0161 - Ambient Air Temperature Sensor Low

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

B0161 Possible Causes

What does this mean?
  • Faulty Ambient Air Temperature Sensor
  • Ambient Air Temperature Sensor harness is open or shorted
  • Ambient Air Temperature Sensor circuit poor electrical connection

How do I fix code B0161?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the B0161 code

Labor: 1.0

The cost of diagnosing the B0161 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B0161 Description

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 - Ambient Air Temperature Sensor Low - AutoCodes.com

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