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B0179 Cadillac Code - Output Air Temperature Sensor 2 Circuit Range/Performance

Quick Answer

The B0179 diagnostic trouble code for Cadillac vehicles refers to the Output Air Temperature Sensor 2 Circuit Range/Performance. Common causes include Faulty output air temperature sensor, Wiring or electrical issues in the sensor circuit, Corrosion or damage to sensor connectors. 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
B0179 Cadillac indicates Output Air Temperature Sensor 2 Circuit Range/Performance.
Common causes
Common causes include Faulty output air temperature sensor, Wiring or electrical issues in the sensor circuit, Corrosion or damage to sensor connectors.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B0179 Cadillac Description

The B0179 diagnostic trouble code for Cadillac vehicles refers to the Output Air Temperature Sensor 2 Circuit Range/Performance. This code indicates that there is a problem with the output air temperature sensor, specifically sensor 2, in the vehicle's HVAC (Heating, Ventilation, and Air Conditioning) system. The output air temperature sensor is responsible for measuring the temperature of the air coming out of the HVAC system and sending this information to the vehicle's computer for proper climate control.

OBDII Code B0179 Cadillac - Output Air Temperature Sensor 2 Circuit Range/Performance
B0179 Cadillac Code - Output Air Temperature Sensor 2 Circuit Range/Performance

Common Causes of B0179 Cadillac

  1. Faulty output air temperature sensor.
  2. Wiring or electrical issues in the sensor circuit.
  3. Corrosion or damage to sensor connectors.
  4. Issues with the HVAC control module.
  5. Environmental factors affecting sensor performance (e.g., debris blocking sensor).

Symptoms of B0179 Cadillac

  1. Inconsistent temperature control in the cabin.
  2. HVAC system blowing hot or cold air intermittently.
  3. Unresponsive climate control settings.
  4. Reduced efficiency in heating or cooling the cabin.
  5. Check Engine Light illuminated on the dashboard.

How to Fix B0179 Cadillac

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the trouble codes and pinpoint the faulty sensor.
  2. Inspect the wiring and connectors associated with the output air temperature sensor for any damage or corrosion. Repair or replace as needed.
  3. Replace the faulty output air temperature sensor with a new, OEM (Original Equipment Manufacturer) sensor.
  4. Clear the trouble codes from the vehicle's computer using the diagnostic scanner.
  5. Test the HVAC system to ensure proper functionality and accurate temperature control.

Cost to Fix B0179 Cadillac

The typical repair costs for addressing the B0179 code related to the Output Air Temperature Sensor 2 Circuit Range/Performance can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the cost of replacing the output air temperature sensor and addressing associated wiring or connector issues can range from $150 to $300. However, it's important to note that labor rates at auto repair shops can vary widely, typically ranging between $80 and $150 per hour. Factors such as location, vehicle make and model, and engine type can also influence the final repair costs. For a more accurate estimate, it's recommended to consult with local auto repair shops.

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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 B0179 Cadillac Code

1. What are common symptoms of OBDII code B0179 in a Cadillac?

- Common symptoms include poor fuel efficiency, rough idling, and potential issues with the vehicle's heating or cooling systems.

2. What can cause the OBDII code B0179 in a Cadillac?

- The code B0179 typically indicates a problem with the output air temperature sensor 2, which may be caused by a faulty sensor, wiring issues, or a damaged connector.

3. How can I diagnose the OBDII code B0179 in my Cadillac?

- Diagnosing the code B0179 involves using a diagnostic scanner to retrieve the code, checking the sensor's wiring and connector for any visible damage, and testing the sensor's resistance.

4. What are the repair options for fixing OBDII code B0179 in a Cadillac?

- Repair options include replacing the output air temperature sensor 2, repairing any damaged wiring or connectors, and clearing the code with a diagnostic scanner.

5. Can I drive my Cadillac with the OBDII code B0179?

- It is not recommended to drive your Cadillac with the OBDII code B0179, as it can lead to further damage and potentially affect the vehicle's performance.

6. How much does it cost to repair the OBDII code B0179 in a Cadillac?

- The cost of repairing the OBDII code B0179 in a Cadillac can vary depending on the extent of the issue, but it typically ranges from $100 to $300 for parts and labor.

7. Will the OBDII code B0179 cause my Cadillac to fail an emissions test?

- Yes, the OBDII code B0179 can cause your Cadillac to fail an emissions test, as it indicates a problem with the vehicle's emissions control system.

8. Can I reset the OBDII code B0179 in my Cadillac without fixing the underlying issue?

- While you can clear the code temporarily with a diagnostic scanner, it is not recommended to reset the code without fixing the underlying issue, as it will likely reappear.

9. How long does it take to repair the OBDII code B0179 in a Cadillac?

- The repair time for the OBDII code B0179 in a Cadillac can vary depending on the specific issue, but it typically takes 1-2 hours for a professional mechanic to diagnose and fix the problem.

10. Is the OBDII code B0179 a common issue in Cadillacs?

- The OBDII code B0179 related to the output air temperature sensor 2 is less common compared to other codes, but it can still occur in Cadillacs due to sensor or wiring issues.

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