AutoCodes – Hummer – B0150 Hummer

B0150 Hummer Code - Air Flow Position Feedback #3 Circuit Malfunction

Quick Answer

The actuators operate using 5 circuits. Common causes include Faulty Auxiliary Mode Actuator, Auxiliary Mode Actuator harness is open or shorted, Auxiliary Mode Actuator 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: B0150 Hummer indicates Air Flow Position Feedback #3 Circuit Malfunction.
Common causes: Common causes include Faulty Auxiliary Mode Actuator, Auxiliary Mode Actuator harness is open or shorted, Auxiliary Mode Actuator 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 2,237

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 B0150 Hummer Description

The actuators operate using 5 circuits. A 5-volt reference, low reference, signal circuit and two bi-directional 0 or 12 volt control circuits. The Heating, Ventilation, and Air Conditioning (HVAC) Control Module supplies a low reference and 5-volt reference to the potentiometer. The HVAC control module monitors the voltage drop across the potentiometer on the door position signal circuit. As the actuator door changes position the door position signal circuit voltage also changes. The two bi-directional control circuits enable the actuator to operate. Both circuits are set to 0 volts when the HVAC control module detects, from the feedback potentiometer, that the actuator is in the desired position. In order to move the actuator, the HVAC control module switches the appropriate control circuit to 12 volts.

OBDII Code B0150 Hummer - Air Flow Position Feedback #3 Circuit Malfunction - AutoCodes.com — B0150 Hummer Code - Air Flow Position Feedback #3 Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B0150 Hummer?

Faulty Auxiliary Mode Actuator
Auxiliary Mode Actuator harness is open or shorted
Auxiliary Mode Actuator circuit poor electrical connection
Faulty Auxiliary Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0150 Hummer?

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 B0150 Hummer 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 B0150 Hummer code?

Need more information on how to fix the B0150 Hummer code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0150 Hummer 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 B0150 Hummer Code

1. What are common symptoms of OBDII code B0150 in a Hummer?

- Common symptoms include rough idling, decreased engine performance, and potential stalling.

2. What does the OBDII code B0150 for Air Flow Position Feedback #3 Circuit Malfunction indicate?

- This code indicates a malfunction in the circuit related to the air flow position feedback sensor #3.

3. What are possible causes of the B0150 code in a Hummer?

- Possible causes include a faulty air flow position sensor, wiring issues, connector problems, or a defective ECM.

4. How can I diagnose the B0150 code in my Hummer?

- Diagnose the code by inspecting the sensor, checking for wiring faults, testing the connector, and using a scan tool to monitor sensor data.

5. Can I drive my Hummer with the B0150 code present?

- It is not recommended to drive your Hummer with the B0150 code present as it can lead to further engine damage and potential safety issues.

6. How do I repair the Air Flow Position Feedback #3 Circuit Malfunction in my Hummer?

- Repair involves replacing the faulty air flow position sensor, repairing any wiring issues, ensuring a secure connection, and clearing the trouble code.

7. Is it safe to reset the OBDII code B0150 in my Hummer?

- It is safe to reset the code after making the necessary repairs to see if the issue has been resolved. However, if the problem persists, further diagnosis is recommended.

8. Can a DIY enthusiast fix the B0150 code in a Hummer?

- Depending on their skill level, a DIY enthusiast may be able to replace the sensor or address simple wiring issues. However, complex diagnostics may require professional help.

9. How much does it cost to repair the B0150 code in a Hummer?

- The cost of repair can vary based on the underlying issue. Replacing the sensor may cost between $100 to $300, while wiring repairs or ECM replacement can increase the cost.

10. How often does the B0150 code occur in Hummer vehicles?

- The B0150 code is relatively uncommon but can occur in Hummer vehicles, especially in older models or those with high mileage. Regular maintenance can help prevent such issues.