Engine-Codes.com
Engine-Codes – Buick – B374A:61 Buick

B374A:61 Buick Code - Air Flow Control Position Feedback Circuit Stuck

Quick Answer

The B374A:61 diagnostic trouble code (DTC) for Buick vehicles indicates a problem with the Air Flow Control Position Feedback Circuit being stuck. Common causes include Faulty throttle position sensor, Wiring issues or loose connections in the Air Flow Control Position Feedback Circuit, Electronic control module (ECM) malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B374A:61 Buick indicates Air Flow Control Position Feedback Circuit Stuck.
Common causes
Common causes include Faulty throttle position sensor, Wiring issues or loose connections in the Air Flow Control Position Feedback Circuit, Electronic control module (ECM) malfunction.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B374A:61 Buick Description

The B374A:61 diagnostic trouble code (DTC) for Buick vehicles indicates a problem with the Air Flow Control Position Feedback Circuit being stuck. This code is typically associated with the vehicle's electronic throttle control system, which is responsible for regulating the airflow into the engine. The throttle control system plays a crucial role in determining the engine's performance, fuel efficiency, and emissions. When the Air Flow Control Position Feedback Circuit is stuck, it means that the system is unable to accurately monitor and adjust the airflow, leading to potential issues with engine performance and drivability.

OBDII Code B374A:61 Buick - Air Flow Control Position Feedback Circuit Stuck
B374A:61 Buick Code - Air Flow Control Position Feedback Circuit Stuck

Common Causes of B374A:61 Buick

  1. Faulty throttle position sensor.
  2. Wiring issues or loose connections in the Air Flow Control Position Feedback Circuit.
  3. Electronic control module (ECM) malfunction.
  4. Mechanical issues with the throttle body or related components.
  5. Environmental factors such as moisture or corrosion affecting the circuit.

Symptoms of B374A:61 Buick

  1. Poor acceleration or lack of response when pressing the gas pedal.
  2. Rough idling or engine stalling.
  3. Reduced fuel efficiency.
  4. Vehicle going into limp mode (limited performance mode).
  5. Check Engine Light illuminated on the dashboard.

How to Fix B374A:61 Buick

  1. Begin by connecting a diagnostic scanner to the vehicle's onboard computer to retrieve the specific trouble code and further diagnose the issue.
  2. Inspect the throttle control system, including the throttle position sensor, wiring, and connectors, for any signs of damage or wear.
  3. Test the throttle position sensor and other related components using a multimeter to ensure they are functioning within the manufacturer's specifications.
  4. Replace any faulty sensors, wiring, or components that are causing the Air Flow Control Position Feedback Circuit to be stuck.
  5. Clear the DTC from the vehicle's computer and perform a test drive to verify that the issue has been resolved.

Cost to Fix B374A:61 Buick

The typical repair costs for addressing a B374A:61 code related to the Air Flow Control Position Feedback Circuit being stuck can range from $200 to $500, including parts and labor. However, it's important to note that the actual cost may vary depending on the specific diagnosis time, labor rates at auto repair shops, and the extent of the repairs needed. Rates can vary based on factors such as the vehicle make and model, location, and the expertise of the technician. It's advisable to consult with a trusted mechanic or auto repair shop to get an accurate estimate for this repair.

Need more information about the B374A:61 Buick code?

Need more information on how to fix the B374A:61 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B374A:61 Buick 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 B374A:61 Buick Code

1. What does the OBDII code B374A:61 mean on a Buick?

The code B374A:61 indicates an issue with the Air Flow Control Position Feedback Circuit, specifically that it is stuck and not responding as expected.

2. What are the symptoms of code B374A:61 in a Buick?

Common symptoms include poor HVAC performance, inability to adjust air direction (e.g., vents, defrost, or floor), unusual noises from the HVAC system, and no changes when adjusting airflow settings.

3. What causes the B374A:61 code on a Buick?

This code is typically caused by a malfunctioning air flow control actuator, wiring issues in the feedback circuit, or a blocked or stuck airflow control door.

4. Can I drive my Buick with the B374A:61 code?

Yes, you can drive the vehicle, but the HVAC system may not function properly, affecting cabin comfort. It’s best to address the issue promptly to avoid further damage.

5. How do I fix the B374A:61 code on my Buick?

Start by inspecting the air flow control actuator and its wiring for damage. If the actuator is stuck or faulty, it may need to be replaced. Also, check for obstructions in the airflow control mechanism.

6. Is the B374A:61 code specific to Buick vehicles?

While this code could appear on other vehicles, it is more commonly associated with Buick models due to their specific HVAC system design.

7. How much does it cost to repair the B374A:61 code on a Buick?

Repair costs can range from $150 to $400, depending on whether the issue is with the actuator, wiring, or mechanical components. Labor and diagnostic fees may vary.

8. Can a faulty HVAC control module cause the B374A:61 code?

Yes, in rare cases, a malfunctioning HVAC control module can fail to send proper signals, leading to this code. However, this is less common than actuator or wiring issues.

9. How can I prevent the B374A:61 code from occurring again?

Regular maintenance, such as keeping the HVAC system clean and free of debris, can help prevent issues with the airflow control mechanism. Inspect wiring and connectors periodically.

10. Do I need special tools to diagnose the B374A:61 code on my Buick?

A diagnostic scan tool capable of reading manufacturer-specific codes and accessing HVAC system data is essential for accurately diagnosing and resolving this issue.

Discuss the causes and fixes for B374A:61 Buick OBDII Code

Submit a New Comment

Code B374A:61 Buick comments

No comments found for this page.