Engine-CodesBuick – B0173 Buick

B0173 Buick Code - Output Air Temperature Sensor 1 Circuit

Quick Answer

The B0173 Buick code indicates a problem with the Output Air Temperature Sensor 1 circuit in the vehicle. Common causes include Faulty Output Air Temperature Sensor 1, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connector. 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
B0173 Buick indicates Output Air Temperature Sensor 1 Circuit.
Common causes
Common causes include Faulty Output Air Temperature Sensor 1, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connector.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code B0173 Buick Description

The B0173 Buick code indicates a problem with the Output Air Temperature Sensor 1 circuit in the vehicle. This sensor is responsible for measuring the temperature of the air coming into the engine intake. The information gathered by this sensor is crucial for the engine control module to adjust the air-fuel mixture for optimal combustion. When this sensor malfunctions or fails, it can lead to a variety of issues that can affect the vehicle's performance and fuel efficiency.

OBDII Code B0173 Buick - Output Air Temperature Sensor 1 Circuit
B0173 Buick Code - Output Air Temperature Sensor 1 Circuit

Common Causes of B0173 Buick

  1. Faulty Output Air Temperature Sensor 1
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor connector
  4. Engine control module malfunction
  5. Environmental factors such as extreme temperatures affecting sensor performance

Symptoms of B0173 Buick

  1. Decreased fuel efficiency
  2. Engine running rough or misfiring
  3. Check Engine Light illuminated
  4. Engine stalling or hesitation
  5. Reduced power output

How to Fix B0173 Buick

  1. Begin by diagnosing the issue using a scan tool to confirm the B0173 code and pinpoint the exact cause of the problem.
  2. Inspect the wiring and connectors in the Output Air Temperature Sensor 1 circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the Output Air Temperature Sensor 1 for proper operation using a multimeter to check for resistance within the sensor's specified range.
  4. If the sensor is faulty, replace it with a new one and ensure proper installation and calibration.
  5. Clear the diagnostic trouble codes from the engine control module and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix B0173 Buick

The typical repair costs for addressing the Output Air Temperature Sensor 1 circuit issue can range from $100 to $300, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's recommended to check with local auto repair shops for a more accurate estimate.

Tech Notes for B0173 Buick

B0173 05: Output Air Temperature Sensor 1 Circuit Short to Battery or Open

B0173 02: Output Air Temperature Sensor 1 Circuit Short to Ground

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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 B0173 Buick Code

1. What are the common symptoms of OBDII code B0173 for Output Air Temperature Sensor 1 Circuit in a Buick?

- Common symptoms include poor fuel economy, rough idling, decreased engine performance, and issues with the air conditioning system.

2. What are the possible causes of OBDII code B0173 in a Buick related to the Output Air Temperature Sensor 1 Circuit?

- The code B0173 in a Buick can be triggered by a faulty output air temperature sensor, damaged wiring or connectors, or a problem with the sensor circuit.

3. How can I diagnose the OBDII code B0173 related to the Output Air Temperature Sensor 1 Circuit in my Buick?

- Diagnosing the code involves checking the sensor's wiring and connectors for damage, testing the sensor's resistance, and ensuring proper sensor operation.

4. Can I continue driving my Buick with OBDII code B0173 for Output Air Temperature Sensor 1 Circuit?

- It is not recommended to drive your Buick with this fault code, as it can lead to engine performance issues and potentially cause further damage.

5. How can I repair OBDII code B0173 for Output Air Temperature Sensor 1 Circuit in my Buick?

- Repair options include replacing the faulty output air temperature sensor, repairing or replacing damaged wiring or connectors, and clearing the fault code with an OBDII scanner.

6. Will resetting the OBDII code B0173 in my Buick make the issue go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear.

7. Can a DIY enthusiast fix OBDII code B0173 related to the Output Air Temperature Sensor 1 Circuit in a Buick?

- Depending on your mechanical skills and tools, you may be able to replace the sensor or check the wiring yourself. However, it is recommended to seek professional help for accurate diagnosis and repair.

8. How much does it typically cost to repair OBDII code B0173 in a Buick at a dealership or repair shop?

- The cost of repairing this code can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor at a dealership or repair shop.

9. Are there any preventive maintenance tips to avoid encountering OBDII code B0173 in a Buick?

- Regularly inspecting and maintaining the air temperature sensor, checking for loose or damaged wiring, and ensuring timely vehicle servicing can help prevent issues leading to this fault code.

10. Will OBDII code B0173 affect my Buick's emissions or cause it to fail an emissions test?

- Yes, this fault code can affect your vehicle's emissions and may cause it to fail an emissions test. It is important to address the issue promptly to ensure compliance with emissions regulations.

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