AutoCodes – Buick – B0416 Buick

B0416 Buick Code - Temperature Control Left Feedback Circuit Actuator High

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 Left Air Temperature Actuator, Left Air Temperature Actuator harness is open or shorted, Left Air Temperature 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: B0416 Buick indicates Temperature Control Left Feedback Circuit Actuator High.
Common causes: Common causes include Faulty Left Air Temperature Actuator, Left Air Temperature Actuator harness is open or shorted, Left Air Temperature 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 921

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 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0416 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 B0416 Buick - Temperature Control Left Feedback Circuit Actuator High - AutoCodes.com — B0416 Buick Code - Temperature Control Left Feedback Circuit Actuator High

What does this mean?

What are the Possible Causes of the DTC B0416 Buick?

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

How to Fix the DTC B0416 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 B0416 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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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 B0416 Buick Code

1. What are the common symptoms of OBDII code B0416 in a Buick related to the Temperature Control Left Feedback Circuit Actuator High?

- The common symptoms include inconsistent temperature control on the left side of the vehicle's climate system, the inability to adjust the temperature properly, and potential issues with the automatic climate control system.

2. What are the possible causes of OBDII code B0416 in a Buick?

- The code B0416 in a Buick could be triggered by a faulty temperature control actuator, damaged wiring or connectors in the temperature control circuit, or issues with the HVAC control module.

3. How can I diagnose the OBDII code B0416 in my Buick?

- Diagnosis involves using an OBDII scanner to retrieve the specific fault code, checking the temperature control actuator for proper operation, inspecting the wiring and connectors for any damage, and testing the HVAC control module for functionality.

4. Can I continue to drive my Buick with OBDII code B0416 present?

- It is not recommended to continue driving the vehicle with the code B0416 as it can lead to discomfort due to temperature control issues. It is advisable to address the problem promptly to avoid further complications.

5. How can I repair OBDII code B0416 in my Buick?

- Repairing the code B0416 may involve replacing the faulty temperature control actuator, repairing or replacing damaged wiring and connectors, or reprogramming the HVAC control module. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Are there any DIY tips for fixing OBDII code B0416 in a Buick?

- DIY tips include checking for loose or damaged wiring, ensuring proper connection of the temperature control actuator, and resetting the HVAC control module by disconnecting the car battery for a few minutes.

7. Will resetting the OBDII code B0416 in my Buick make it go away permanently?

- Resetting the code may temporarily clear the error code, but if the underlying issue causing the code is not addressed, it is likely to return. It is essential to diagnose and repair the root cause of the problem.

8. How much does it typically cost to repair OBDII code B0416 in a Buick?

- The cost of repairing OBDII code B0416 can vary depending on the specific issue causing the code, the labor rates in your area, and the cost of replacement parts. It is advisable to get a few quotes from reputable mechanics.

9. Can extreme weather conditions contribute to triggering OBDII code B0416 in a Buick?

- Extreme temperature fluctuations or exposure to moisture can potentially contribute to triggering code B0416 by affecting the temperature control actuator or the wiring connections. It is essential to keep the vehicle protected from such conditions.

10. How long does it typically take to repair OBDII code B0416 in a Buick?

- The repair time for OBDII code B0416 can vary depending on the exact cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to diagnose and fix the problem completely.