AutoCodes – Chevrolet – B0179 Chevrolet

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

Quick Answer

Air temperature sensors allow the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the discharge duct air, outside air and inside air temperatures. Common causes include Faulty Output Air Temperature Sensor 2, Output Air Temperature Sensor 2 harness is open or shorted, Output Air Temperature Sensor 2 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: B0179 Chevrolet indicates Output Air Temperature Sensor 2 Circuit Range/Performance.
Common causes: Common causes include Faulty Output Air Temperature Sensor 2, Output Air Temperature Sensor 2 harness is open or shorted, Output Air Temperature Sensor 2 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 3,677

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 B0179 Chevrolet Description

Air temperature sensors allow the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the discharge duct air, outside air and inside air temperatures. The HVAC control module provides ground to the air temperature sensor through the low reference circuit. The HVAC control module monitors the voltage drop across the air temperature sensor thermistor by supplying a 5 volt reference to the signal circuit of the air temperature sensor for automatic control calculations. 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. The HVAC control module can read voltage values and count values where 1 volt is approximately equal to 51 counts.

OBDII Code B0179 Chevrolet - Output Air Temperature Sensor 2 Circuit Range/Performance - AutoCodes.com — B0179 Chevrolet Code - Output Air Temperature Sensor 2 Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0179 Chevrolet?

Faulty Output Air Temperature Sensor 2
Output Air Temperature Sensor 2 harness is open or shorted
Output Air Temperature Sensor 2 circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0179 Chevrolet?

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 B0179 Chevrolet 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 B0179 Chevrolet code?

Need more information on how to fix the B0179 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0179 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 Chevrolet Code

1. What are the common symptoms of OBDII code B0179 for Output Air Temperature Sensor 2 Circuit Range/Performance?

The common symptoms include poor fuel efficiency, rough idling, stalling, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code B0179 in a Chevrolet related to the Output Air Temperature Sensor 2?

Possible causes may include a faulty air temperature sensor, damaged wiring or connectors, or issues with the engine control module.

3. How can I diagnose the OBDII code B0179 for Output Air Temperature Sensor 2 Circuit Range/Performance in my Chevrolet?

You can use an OBDII scanner to retrieve the specific code, visually inspect the sensor and its connections, and perform electrical tests to check for proper sensor function.

4. Can I continue driving my Chevrolet with OBDII code B0179 for Output Air Temperature Sensor 2 Circuit Range/Performance?

It is not recommended to drive the vehicle with this code present, as it can lead to decreased performance and potential damage to the engine over time.

5. How can I repair OBDII code B0179 related to the Output Air Temperature Sensor 2 in my Chevrolet?

To repair this code, you may need to replace the faulty air temperature sensor, repair any damaged wiring or connectors, or reset the engine control module after fixing the issue.

6. Will resetting the Check Engine Light resolve OBDII code B0179 for Output Air Temperature Sensor 2 in my Chevrolet?

Resetting the Check Engine Light will only clear the code temporarily. It is crucial to address the underlying issue causing the code to prevent it from reoccurring.

7. Is it possible to prevent OBDII code B0179 for Output Air Temperature Sensor 2 Circuit Range/Performance in my Chevrolet?

Regular maintenance, such as checking and replacing sensors as needed, inspecting wiring for damage, and keeping the engine well-tuned, can help prevent this code from appearing.

8. Can a DIY enthusiast fix OBDII code B0179 for Output Air Temperature Sensor 2 in a Chevrolet?

Depending on your level of experience and access to tools, you may be able to diagnose and fix this code yourself. However, if you are unsure, it is best to consult a professional mechanic.

9. How important is it to address OBDII code B0179 for Output Air Temperature Sensor 2 in my Chevrolet promptly?

It is crucial to address this code promptly to prevent potential engine damage, ensure optimal performance, and maintain fuel efficiency in your Chevrolet.

10. Can a faulty Output Air Temperature Sensor 2 impact other systems in my Chevrolet?

Yes, a faulty sensor can impact other systems such as the engine control module, fuel injection system, and emissions control, leading to performance issues and reduced efficiency.