AutoCodes – Buick – B0229 Buick

B0229 Buick Code - Recirculation Position Feedback Circuit Actuator Range/Performance

Quick Answer

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module controls the HVAC door actuators to regulate the airflow through the HVAC system. Common causes include Faulty Recirculation Actuator, Recirculation Actuator harness is open or shorted, Recirculation 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: B0229 Buick indicates Recirculation Position Feedback Circuit Actuator Range/Performance.
Common causes: Common causes include Faulty Recirculation Actuator, Recirculation Actuator harness is open or shorted, Recirculation 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 1,475

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 B0229 Buick Description

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of a stepper motor, a logic circuit, and a potentiometer. The potentiometer inside the door actuator allows the module to monitor the current position of the actuator drive shaft. The module supplies a 5-volt source voltage to the potentiometer on the 5-volt reference circuit. The module supplies ground to the potentiometer through the low reference circuit. The HVAC control module monitors the voltage drop across the potentiometer on the door position signal circuit. When the actuator shaft rotates, the voltage on the door position signal circuit changes. The module converts the voltage value to a count value where 1-volt is approximately equal to 51 counts. The HVAC control module calibrates the travel range of the HVAC door actuators when it is initially powered by the battery positive voltage circuit. During calibration, the module commands the actuators in each direction until door travel is stopped. The module stores the minimum door positions and the maximum door positions of each actuator into memory. The total travel range is calculated by subtracting the minimum door position from the maximum door position.

OBDII Code B0229 Buick - Recirculation Position Feedback Circuit Actuator Range/Performance - AutoCodes.com — B0229 Buick Code - Recirculation Position Feedback Circuit Actuator Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0229 Buick?

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

How to Fix the DTC B0229 Buick?

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 B0229 Buick 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.

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Need Help with the 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 B0229 Buick Code

1. What are the common symptoms of OBDII code B0229 in a Buick?

- Common symptoms include issues with the HVAC system, such as inconsistent air recirculation or unusual noises from the HVAC controls.

2. What causes the OBDII code B0229 in a Buick?

- The code B0229 is usually triggered by a malfunction in the recirculation position feedback circuit actuator, which can be caused by a faulty actuator motor or wiring issues.

3. How can I diagnose the OBDII code B0229 in my Buick?

- Diagnosis involves using an OBDII scanner to retrieve the specific code, followed by inspecting the recirculation position feedback circuit actuator and related components for any visible damage or malfunctions.

4. Can I continue driving my Buick with the OBDII code B0229 present?

- It is generally safe to continue driving with this code, but it's recommended to address the issue promptly to avoid potential HVAC system malfunctions or decreased comfort.

5. How can I repair the OBDII code B0229 in my Buick?

- Repair typically involves replacing the faulty recirculation position feedback circuit actuator, addressing any wiring issues, and clearing the trouble code with an OBDII scanner.

6. Are there any DIY tips for fixing the OBDII code B0229 in a Buick?

- DIY enthusiasts with automotive experience may attempt to replace the recirculation position feedback circuit actuator themselves, following a repair manual or online guides for guidance.

7. Is the OBDII code B0229 a common issue in Buick vehicles?

- While not extremely common, the B0229 code can occur in Buick vehicles with HVAC system malfunctions related to the recirculation position feedback circuit actuator.

8. Can extreme weather conditions cause the OBDII code B0229 to trigger in a Buick?

- Extreme temperature fluctuations or moisture exposure can potentially contribute to the malfunction of the recirculation position feedback circuit actuator, leading to the B0229 trouble code.

9. Will resetting the OBDII code B0229 in my Buick make it disappear permanently?

- Resetting the code may temporarily clear the warning, but if the underlying issue with the recirculation position feedback circuit actuator is not fixed, the code is likely to reappear.

10. How much does it typically cost to repair the OBDII code B0229 in a Buick at a professional auto repair shop?

- Repair costs can vary depending on labor rates and parts prices, but replacing the recirculation position feedback circuit actuator for code B0229 in a Buick can cost anywhere from $150 to $400.