AutoCodes – Cadillac – B0150 Cadillac

B0150 Cadillac 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 Cadillac 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 967

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

What does this mean?

What are the Possible Causes of the DTC B0150 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac code?

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Need Help with the Code?

Get the B0150 Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code B0150 in a Cadillac related to Air Flow Position Feedback #3 Circuit Malfunction?

- Common symptoms include rough idle, poor engine performance, stalling, and illuminated check engine light.

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

- Potential causes may include a faulty air flow sensor, damaged wiring or connectors, a defective ECM, or a vacuum leak.

3. How can I diagnose the Air Flow Position Feedback #3 Circuit Malfunction in my Cadillac?

- Diagnosing this issue usually involves using a scan tool to retrieve the trouble code and then performing a visual inspection of the air flow sensor, wiring, and connectors.

4. Is it safe to continue driving my Cadillac with the B0150 code present?

- It is not recommended to drive with the B0150 code active, as it can lead to poor engine performance and potential damage if left unresolved.

5. Can I repair the Air Flow Position Feedback #3 Circuit Malfunction in my Cadillac myself?

- Repairing this issue often requires advanced diagnostic equipment and knowledge, so it is recommended to seek professional help to accurately diagnose and fix the problem.

6. How much does it typically cost to repair OBDII code B0150 in a Cadillac?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

7. Are there any preventive measures to avoid encountering the B0150 code in a Cadillac?

- Regular maintenance of the air flow sensor, checking for any signs of wear or damage, and addressing any engine performance issues promptly can help prevent the occurrence of this code.

8. Can a dirty air filter cause the B0150 code to trigger in a Cadillac?

- While a dirty air filter can affect engine performance, it is unlikely to directly cause the B0150 code. Focus on checking the air flow sensor and related components for issues.

9. Will resetting the check engine light make the B0150 code disappear permanently?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the B0150 code is not addressed, it is likely to reappear after some driving cycles.

10. How long does it take to repair the Air Flow Position Feedback #3 Circuit Malfunction in a Cadillac?

- The repair time can vary depending on the exact cause of the issue and the availability of parts, but it may take anywhere from a few hours to a day to complete the repair.