AutoCodes – Saturn – B0150 Saturn

B0150 Saturn 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 Saturn 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 1,275

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

What does this mean?

What are the Possible Causes of the DTC B0150 Saturn?

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 Saturn?

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 Saturn 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 Saturn code?

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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 Saturn Code

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

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

2. What are the possible causes of OBDII code B0150 in a Saturn indicating Air Flow Position Feedback #3 Circuit Malfunction?

- The code may be triggered by a faulty air flow sensor, damaged wiring or connectors, or issues with the engine control module.

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

- A thorough inspection of the air flow sensor, wiring, and connectors is necessary. Using an OBDII scanner can help pinpoint the exact cause of the issue.

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

- While a dirty air filter can affect engine performance, it is unlikely to trigger this specific code. Focus on checking the air flow sensor and related components.

5. Are there any DIY repair tips for fixing OBDII code B0150 related to Air Flow Position Feedback #3 Circuit Malfunction in a Saturn?

- DIY repair tips include checking and cleaning the air flow sensor, inspecting wiring for damage, and ensuring secure connections to resolve the issue.

6. Is it safe to continue driving my Saturn with OBDII code B0150 indicating Air Flow Position Feedback #3 Circuit Malfunction?

- It is not recommended to drive the vehicle with this code as it can lead to further engine damage or potential safety hazards. Prompt diagnosis and repair are advised.

7. Can resetting the OBDII code B0150 in a Saturn fix the issue temporarily?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Air Flow Position Feedback #3 Circuit Malfunction.

8. How much does it typically cost to repair OBDII code B0150 in a Saturn related to Air Flow Position Feedback #3 Circuit Malfunction?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $400 for parts and labor.

9. Will driving with a malfunctioning air flow sensor due to OBDII code B0150 affect fuel efficiency in my Saturn?

- Yes, driving with a malfunctioning air flow sensor can negatively impact fuel efficiency, as the engine may not be running optimally.

10. Can extreme weather conditions contribute to triggering OBDII code B0150 related to Air Flow Position Feedback #3 Circuit Malfunction in a Saturn?

- Extreme weather conditions can potentially exacerbate existing issues with the air flow sensor or electrical components, leading to the triggering of the code.