AutoCodes – Generic – B0332

B0332 Code - Ambient Air Temperature Sensor Short To Ground

Quick Answer

The ambient air temperature sensor allows the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the air surrounding the front of the vehicle. Common causes include Faulty Ambient Air Temperature Sensor, Ambient Air Temperature Sensor harness is open or shorted, Ambient Air Temperature Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0332 indicates Ambient Air Temperature Sensor Short To Ground.
Common causes: Common causes include Faulty Ambient Air Temperature Sensor, Ambient Air Temperature Sensor harness is open or shorted, Ambient Air Temperature Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 3,425

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0332 Description

The ambient air temperature sensor allows the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the air surrounding the front of the vehicle. The inside air temperature sensor allows the HVAC control module to monitor the temperature of the air inside the passenger compartment. The module applies 5 volts to internal input resistors that are connected to the signal circuits of the air temperature sensors. The module provides ground to the air temperature sensors through the low reference circuits. The HVAC control module monitors the voltage drops across the air temperature sensors and uses the inputs for automatic control calculations. The HVAC control module also uses the ambient air temperature input to calculate the value of the ambient air temperature display. When the air temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the air temperatures are hot, the resistances of the sensors are low and the voltage signals are low.

OBDII Code B0332 - Ambient Air Temperature Sensor Short To Ground - AutoCodes.com — B0332 Code - Ambient Air Temperature Sensor Short To Ground

What does this mean?

What are the Possible Causes of the DTC B0332?

Faulty Ambient Air Temperature Sensor
Ambient Air Temperature Sensor harness is open or shorted
Ambient Air Temperature Sensor circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0332?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0332 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B0332 code?

Need more information on how to fix the B0332 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0332 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0332 Buick — Ambient Air Temperature Sensor Short To Ground
B0332 Cadillac — Ambient Air Temperature Sensor Short To Ground
B0332 Chevrolet — Ambient Air Temperature Sensor Short To Ground
B0332 GMC — Ambient Air Temperature Sensor Short To Ground

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0332 Code

1. What are the common symptoms of an ambient air temperature sensor short to ground (OBDII code B0332)?

- Common symptoms include inaccurate temperature readings on the vehicle's display, issues with the climate control system, and potential impacts on fuel efficiency.

2. What can cause the ambient air temperature sensor to short to ground and trigger code B0332?

- Causes may include a damaged sensor wiring harness, a faulty sensor itself, or corrosion in the sensor connector.

3. How can I diagnose a short to ground issue with the ambient air temperature sensor?

- You can use a multimeter to test the sensor's wiring for continuity and shorts, inspect the sensor and its wiring for physical damage, and check for any corrosion in the connector.

4. Can a short to ground issue with the ambient air temperature sensor affect other vehicle systems?

- Yes, it can potentially impact the accuracy of the outside temperature display, the operation of the climate control system, and the vehicle's fuel management system.

5. What is the recommended repair for an ambient air temperature sensor short to ground?

- The repair typically involves replacing the ambient air temperature sensor and repairing or replacing any damaged wiring or connectors.

6. Is it safe to continue driving with OBDII code B0332 triggered?

- While driving with this code may not pose an immediate safety risk, it is recommended to address the issue promptly to avoid potential impacts on other vehicle systems.

7. Can I reset the OBDII code B0332 after replacing the ambient air temperature sensor?

- Yes, after completing the repair and replacing the sensor, you can use an OBDII scanner to clear the error code and reset the vehicle's computer system.

8. How important is the ambient air temperature sensor for overall vehicle performance?

- The ambient air temperature sensor plays a crucial role in various vehicle systems, including climate control, fuel efficiency, and engine performance, so it is essential for optimal operation.

9. Are there any preventive measures to avoid ambient air temperature sensor short to ground issues?

- Regular inspection of the sensor and its wiring, keeping the sensor clean, and addressing any warning signs promptly can help prevent issues like a short to ground.

10. Can extreme weather conditions contribute to ambient air temperature sensor malfunctions?

- Yes, extreme temperatures, moisture, and exposure to harsh environmental conditions can potentially lead to sensor malfunctions, including shorts to ground.