B0179 Code - Output Air Temperature Sensor 2 Circuit Range/Performance
Quick Answer
The B0179 diagnostic trouble code (DTC) refers to the Output Air Temperature Sensor 2 Circuit Range/Performance. Common causes include Faulty output air temperature sensor 2: The sensor itself may be defective or damaged, causing it to send incorrect signals to the vehicle's computer, Wiring issues: Damaged or corroded wiring connections leading to the sensor can disrupt the signal transmission, Poor electrical connection: Loose or poor electrical connections between the sensor and the vehicle's computer can result in erratic sensor readings. 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 indicates Output Air Temperature Sensor 2 Circuit Range/Performance.
- Common causes
- Common causes include Faulty output air temperature sensor 2: The sensor itself may be defective or damaged, causing it to send incorrect signals to the vehicle's computer, Wiring issues: Damaged or corroded wiring connections leading to the sensor can disrupt the signal transmission, Poor electrical connection: Loose or poor electrical connections between the sensor and the vehicle's computer can result in erratic sensor readings.
- 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 B0179 Description
The B0179 diagnostic trouble code (DTC) refers to the Output Air Temperature Sensor 2 Circuit Range/Performance. This means that the onboard computer of the vehicle has detected that the signal from the output air temperature sensor 2 is outside of the expected range or not performing within the specified parameters. The output air temperature sensor 2 is responsible for measuring the temperature of the air leaving the HVAC system in the vehicle.
Common Causes of B0179
- Faulty output air temperature sensor 2: The sensor itself may be defective or damaged, causing it to send incorrect signals to the vehicle's computer.
- Wiring issues: Damaged or corroded wiring connections leading to the sensor can disrupt the signal transmission.
- Poor electrical connection: Loose or poor electrical connections between the sensor and the vehicle's computer can result in erratic sensor readings.
- HVAC system malfunctions: Problems within the HVAC system itself, such as a faulty blower motor or a clogged air filter, can indirectly affect the output air temperature sensor 2.
Symptoms of B0179
- Inaccurate temperature readings on the climate control display.
- HVAC system blowing hot or cold air inconsistently.
- HVAC system not responding to temperature adjustments.
- Decreased fuel efficiency due to HVAC system overworking.
- Illumination of the check engine light on the dashboard.
How to Fix B0179
- Diagnose the issue: Use a scan tool to retrieve the DTC and verify the output air temperature sensor 2's performance.
- Inspect sensor and wiring: Check the sensor for any visible damage and inspect the wiring for any signs of wear or corrosion.
- Replace the sensor: If the sensor is found to be faulty, replace it with a new one following the manufacturer's guidelines.
- Repair wiring connections: Repair or replace any damaged wiring connections leading to the sensor.
- Clear the DTC: After completing the repair, clear the DTC using a scan tool to reset the check engine light and ensure the issue has been resolved.
Cost to Fix B0179
The typical repair costs for addressing the B0179 code can vary depending on the vehicle make and model, the location of the repair shop, and the specific parts needed for the repair. On average, replacing the output air temperature sensor 2 can cost between $100 and $200, including parts and labor. Additional costs may apply if there are wiring issues that need to be addressed. It is recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates at auto repair shops can range from $80 to $150 per hour, with variations based on the factors mentioned above.
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Code B0179 Information for Specific Makes
- B0179 Buick — Output Air Temperature Sensor 2 Circuit Range/Performance
- B0179 Cadillac — Output Air Temperature Sensor 2 Circuit Range/Performance
- B0179 Chevrolet — Output Air Temperature Sensor 2 Circuit Range/Performance
- B0179 GMC — Output Air Temperature Sensor 2 Circuit Range/Performance
Frequently Asked Questions about B0179 Code
1. What are common symptoms of OBDII code B0179?
- Common symptoms include issues with the vehicle's air conditioning system, poor fuel efficiency, and potential engine overheating.
2. What can cause the Output Air Temperature Sensor 2 Circuit Range/Performance code (B0179) to trigger?
- The code may be triggered by a faulty output air temperature sensor, damaged wiring or connectors, or issues with the sensor circuit.
3. How can I diagnose the cause of OBDII code B0179?
- You can use a scan tool to read the code and then perform a visual inspection of the sensor, wiring, and connectors. Testing the sensor's resistance and voltage can also help pinpoint the issue.
4. What are some repair tips for addressing code B0179?
- Repair tips may include replacing the output air temperature sensor, repairing damaged wiring or connectors, and ensuring proper connection and mounting of the sensor.
5. Can I drive my vehicle with OBDII code B0179?
- It is not recommended to drive the vehicle with this code present, as it can affect engine performance and potentially lead to other issues if left unresolved.
6. How important is it to fix OBDII code B0179 promptly?
- It is important to address this code promptly to prevent potential damage to the vehicle's engine or air conditioning system, and to ensure optimal performance and fuel efficiency.
7. Will resetting the OBDII code B0179 make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear after driving the vehicle for some time.
8. Can a DIY enthusiast repair OBDII code B0179 at home?
- Depending on your skill level and access to tools, you may be able to replace the output air temperature sensor or repair wiring yourself. However, professional diagnosis and repair may be recommended for complex issues.
9. How much does it typically cost to fix OBDII code B0179 at a repair shop?
- The cost of fixing this code can vary depending on the specific cause of the issue and labor rates in your area. It may range from $100 to $300 or more, including parts and labor.
10. Are there any recalls or technical service bulletins related to OBDII code B0179?
- It is recommended to check with your vehicle manufacturer or a trusted repair shop to see if there are any recalls or technical service bulletins related to this specific OBDII code.
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