AutoCodes – Generic – B0150

B0150 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 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,434

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC B0150?

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?

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 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 code?

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

Need Help with the Code?

Get the B0150 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0150 Buick — Air Flow Position Feedback #3 Circuit Malfunction
B0150 Cadillac — Air Flow Position Feedback #3 Circuit Malfunction
B0150 Chevrolet — Air Flow Position Feedback #3 Circuit Malfunction
B0150 GMC — Air Flow Position Feedback #3 Circuit Malfunction
B0150 Hummer — Air Flow Position Feedback #3 Circuit Malfunction
B0150 Pontiac — Air Flow Position Feedback #3 Circuit Malfunction
B0150 Saturn — Air Flow Position Feedback #3 Circuit Malfunction

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 Code

1. What are the common symptoms of OBDII code B0150 (Air Flow Position Feedback #3 Circuit Malfunction)?

- Common symptoms include poor engine performance, rough idle, stalling, and possible loss of power.

2. What are the possible causes of OBDII code B0150?

- The code B0150 can be triggered by issues such as a faulty air flow sensor, damaged wiring or connectors, or a problem in the air intake system.

3. How can I diagnose the cause of OBDII code B0150?

- Diagnose the code by checking the air flow sensor, inspecting wiring and connectors for damage, and verifying the integrity of the air intake system components.

4. Can a dirty air filter cause OBDII code B0150?

- While a dirty air filter can affect air flow, it is not a direct cause of OBDII code B0150. However, it is good practice to ensure the air filter is clean and not obstructed.

5. What is the recommended repair for OBDII code B0150?

- The recommended repair involves addressing the specific issue causing the circuit malfunction, such as replacing a faulty air flow sensor, repairing damaged wiring, or fixing problems in the air intake system.

6. Can I drive my vehicle with OBDII code B0150?

- It is not recommended to drive your vehicle with OBDII code B0150 as it can lead to further damage and affect engine performance. Have the issue diagnosed and repaired as soon as possible.

7. Will resetting the OBDII code B0150 make it disappear permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the malfunction.

8. How much does it typically cost to repair OBDII code B0150?

- The cost of repairing OBDII code B0150 can vary depending on the specific cause of the malfunction. Costs may include parts replacement, labor charges, and diagnostic fees.

9. Can I fix OBDII code B0150 myself, or do I need a professional mechanic?

- Depending on your skill level and experience with automotive repairs, you may be able to address OBDII code B0150 yourself if you have the necessary tools and knowledge. However, consulting a professional mechanic is recommended for accurate diagnosis and repair.

10. Is OBDII code B0150 a serious issue that requires immediate attention?

- OBDII code B0150 should be addressed promptly to prevent potential damage to the engine and ensure optimal vehicle performance. Ignoring the code can lead to more severe issues over time.