AutoCodes – Chevrolet – B0174 Chevrolet

B0174 Chevrolet Code - Output Air Temperature Sensor 1 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 1, Output Air Temperature Sensor 1 harness is open or shorted, Output Air Temperature Sensor 1 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: B0174 Chevrolet indicates Output Air Temperature Sensor 1 Circuit Range/Performance.
Common causes: Common causes include Faulty Output Air Temperature Sensor 1, Output Air Temperature Sensor 1 harness is open or shorted, Output Air Temperature Sensor 1 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 2,605

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 B0174 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 B0174 Chevrolet - Output Air Temperature Sensor 1 Circuit Range/Performance - AutoCodes.com — B0174 Chevrolet Code - Output Air Temperature Sensor 1 Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0174 Chevrolet?

Faulty Output Air Temperature Sensor 1
Output Air Temperature Sensor 1 harness is open or shorted
Output Air Temperature Sensor 1 circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0174 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 B0174 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 B0174 Chevrolet code?

Need more information on how to fix the B0174 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0174 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 B0174 Chevrolet Code

1. What are common symptoms of OBDII code B0174 for Output Air Temperature Sensor 1 Circuit Range/Performance in a Chevrolet?

- Common symptoms include a decrease in fuel efficiency, rough idling, and potential engine stalling.

2. What are the possible causes of OBDII code B0174 in a Chevrolet related to the Output Air Temperature Sensor 1 Circuit?

- Possible causes may include a faulty air temperature sensor, a damaged sensor wiring harness, or issues with the sensor's connection.

3. How can I diagnose OBDII code B0174 in my Chevrolet related to the Output Air Temperature Sensor 1 Circuit?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific error code, testing the sensor's resistance, and inspecting the sensor's wiring for any damage.

4. Can a dirty air filter trigger OBDII code B0174 for Output Air Temperature Sensor 1 Circuit Range/Performance in a Chevrolet?

- Yes, a dirty air filter can disrupt the sensor's readings and potentially lead to this error code being triggered.

5. Are there any quick fixes or repair tips for resolving OBDII code B0174 in a Chevrolet due to issues with the Output Air Temperature Sensor 1 Circuit?

- Quick fixes may include cleaning the sensor, checking and securing the sensor's wiring connections, or replacing the sensor if necessary.

6. Can driving with OBDII code B0174 in a Chevrolet related to the Output Air Temperature Sensor 1 Circuit cause further damage?

- Continuing to drive with this issue may result in reduced engine performance and fuel efficiency, and it is recommended to address the problem promptly to prevent any potential long-term damage.

7. Is it safe to ignore OBDII code B0174 in a Chevrolet if the vehicle seems to be running fine?

- Ignoring the code may lead to decreased fuel efficiency and performance over time, so it is advisable to have the issue diagnosed and repaired to ensure optimal vehicle operation.

8. How much does it typically cost to repair OBDII code B0174 for Output Air Temperature Sensor 1 Circuit Range/Performance in a Chevrolet?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from around $100 to $300 for parts and labor.

9. Can a DIY enthusiast repair OBDII code B0174 in a Chevrolet related to the Output Air Temperature Sensor 1 Circuit?

- Depending on the individual's skill level and access to tools, DIY repair of this code may be feasible, but it is recommended to consult a professional if unsure.

10. How long does it usually take to fix OBDII code B0174 for Output Air Temperature Sensor 1 Circuit Range/Performance in a Chevrolet?

- The repair time can vary based on the complexity of the issue and the availability of parts, but it typically takes a professional mechanic around 1-2 hours to address the problem.