AutoCodes – Generic – B0416

B0416 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 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 1,780

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 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 - Temperature Control Left Feedback Circuit Actuator High - AutoCodes.com — B0416 Code - Temperature Control Left Feedback Circuit Actuator High

What does this mean?

What are the Possible Causes of the DTC B0416?

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?

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 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 B0416 code?

Need more information on how to fix the B0416 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0416 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0416 Buick — Temperature Control Left Feedback Circuit Actuator High
B0416 Cadillac — Temperature Control Left Feedback Circuit Actuator High
B0416 Chevrolet — Temperature Control Left Feedback Circuit Actuator High
B0416 GMC — Temperature Control Left Feedback Circuit Actuator High
B0416 Pontiac — Temperature Control Left Feedback Circuit Actuator High
B0416 Saturn — Temperature Control Left Feedback Circuit Actuator High

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 Code

1. What are common symptoms of OBDII code B0416?

- Common symptoms include issues with temperature control on the left side of the vehicle, such as inconsistent heating or cooling, or the inability to adjust the temperature properly.

2. What does the OBDII code B0416 indicate?

- The code B0416 indicates a problem with the temperature control left feedback circuit actuator being too high, which can affect the HVAC system's ability to regulate temperature.

3. What are possible causes of OBDII code B0416?

- Possible causes of this code include a faulty temperature control actuator, damaged wiring or connectors in the feedback circuit, or issues with the HVAC control module.

4. How can I diagnose the OBDII code B0416?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the temperature control actuator for proper operation, and inspecting the wiring and connectors for any signs of damage.

5. Can I drive my vehicle with OBDII code B0416?

- It is generally safe to drive the vehicle with this code, but you may experience discomfort due to temperature control issues. It is recommended to address the problem as soon as possible.

6. How can I repair OBDII code B0416?

- Repairing this code may involve replacing the faulty temperature control actuator, repairing or replacing damaged wiring or connectors, or reprogramming the HVAC control module.

7. Is it possible to reset OBDII code B0416 without repairs?

- While you can clear the code with a scan tool, it is not recommended to reset the code without addressing the underlying issue, as the problem may persist and affect the vehicle's performance.

8. How much does it cost to fix OBDII code B0416?

- The cost of fixing this code can vary depending on the cause of the issue, the extent of the repairs needed, and labor rates in your area. It is advisable to consult a professional for an accurate estimate.

9. Can OBDII code B0416 cause other problems in the vehicle?

- While the code itself may not cause immediate damage, unresolved temperature control issues can lead to discomfort for passengers and impact the overall functionality of the HVAC system.

10. How can I prevent OBDII code B0416 from recurring?

- To prevent the recurrence of this code, it is essential to address any underlying issues promptly, perform regular maintenance on the HVAC system, and keep an eye out for any signs of temperature control problems.