AutoCodes – GMC – B0416 GMC

B0416 GMC 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 GMC 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 1,041

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

What does this mean?

What are the Possible Causes of the DTC B0416 GMC?

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 GMC?

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 GMC 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 GMC Code

1. What are the common symptoms of OBDII code B0416 GMC?

The common symptoms of OBDII code B0416 GMC include inconsistent temperature control on the left side of the vehicle, the HVAC system blowing hot air when set to cool, or vice versa.

2. What is the likely cause of OBDII code B0416 GMC?

The likely cause of OBDII code B0416 GMC is a malfunction in the temperature control left feedback circuit actuator, resulting in a high voltage reading.

3. How can I diagnose the issue related to OBDII code B0416 GMC?

To diagnose the issue related to OBDII code B0416 GMC, you can use a diagnostic scanner to read the code, inspect the wiring and connections related to the left feedback circuit actuator, and perform a voltage test on the actuator.

4. Can I drive my vehicle with OBDII code B0416 GMC?

It is not recommended to drive your vehicle with OBDII code B0416 GMC, as it can lead to further HVAC system malfunctions and discomfort while driving.

5. How can I repair OBDII code B0416 GMC?

To repair OBDII code B0416 GMC, you may need to replace the temperature control left feedback circuit actuator, repair any damaged wiring or connections, and clear the code with a diagnostic scanner.

6. Will OBDII code B0416 GMC affect the overall performance of my vehicle?

While OBDII code B0416 GMC primarily affects the HVAC system's temperature control, ignoring the issue can impact the overall comfort and functionality of your vehicle.

7. Can a DIY enthusiast fix OBDII code B0416 GMC?

Depending on your experience and access to tools, a DIY enthusiast may be able to fix OBDII code B0416 GMC by following proper diagnostic and repair procedures.

8. Is OBDII code B0416 GMC a common issue in GMC vehicles?

OBDII code B0416 GMC related to the temperature control left feedback circuit actuator is a relatively common issue in GMC vehicles, particularly in models with HVAC systems.

9. How much does it typically cost to repair OBDII code B0416 GMC at a mechanic?

The cost to repair OBDII code B0416 GMC at a mechanic can vary depending on the specific model of your GMC vehicle, the labor rates in your area, and the extent of the repair needed.

10. How can I prevent OBDII code B0416 GMC from recurring in the future?

To prevent OBDII code B0416 GMC from recurring in the future, it's essential to perform regular maintenance on your vehicle's HVAC system, address any temperature control issues promptly, and ensure proper wiring and connections.