AutoCodes – Generic – B0413

B0413 Code - Main Temperature Control Feedback Circuit

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 Drivers Air Temperature Actuator, Drivers Air Temperature Actuator harness is open or shorted, Drivers 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: B0413 indicates Main Temperature Control Feedback Circuit.
Common causes: Common causes include Faulty Drivers Air Temperature Actuator, Drivers Air Temperature Actuator harness is open or shorted, Drivers 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 6,452

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 29, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0413 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 an electric motor and a potentiometer. The module supplies a low reference and 5-volt reference source voltage to the potentiometer. 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 control circuit uses either a 0, 2.5, or 5-volt signal to command the actuator movement. When the actuator is at rest, the control circuit value is 2.5 volts. A 0 or 5-volt control signal commands the actuator movement in opposite directions.

OBDII Code B0413 - Main Temperature Control Feedback Circuit - AutoCodes.com — B0413 Code - Main Temperature Control Feedback Circuit

What does this mean?

What are the Possible Causes of the DTC B0413?

Faulty Drivers Air Temperature Actuator
Drivers Air Temperature Actuator harness is open or shorted
Drivers Air Temperature Actuator circuit poor electrical connection

How to Fix the DTC B0413?

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 does this mean?

Code Tech Notes

B0413:02 Main Temperature Control Feedback Circuit Short to Ground
B0413:05 Main Temperature Control Feedback Circuit Short to Battery or Open
B0413:61 Main Temperature Control Feedback Circuit Actuator Stuck Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0413 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 B0413 code?

Need more information on how to fix the B0413 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0413 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0413 Buick — Main Temperature Control Feedback Circuit
B0413 Cadillac — Main Temperature Control Feedback Circuit
B0413 Chevrolet — Main Temperature Control Feedback Circuit
B0413 GMC — Main Temperature Control Feedback Circuit

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 B0413 Code

1. What are the common symptoms of OBDII code B0413 Main Temperature Control Feedback Circuit?

- Common symptoms include issues with the vehicle's heating and cooling system, inconsistent temperature control, and the HVAC system not responding to temperature adjustments.

2. What are the possible causes of OBDII code B0413 Main Temperature Control Feedback Circuit?

- Possible causes include a faulty main temperature control sensor, damaged wiring or connectors in the feedback circuit, or a malfunctioning HVAC control module.

3. How can I diagnose OBDII code B0413 Main Temperature Control Feedback Circuit?

- Diagnosing this code typically involves using a scan tool to retrieve the specific trouble code, checking the main temperature control sensor for proper operation, and inspecting the wiring and connectors in the feedback circuit for any damage.

4. Can I still drive my vehicle with OBDII code B0413 Main Temperature Control Feedback Circuit?

- While it may be possible to drive the vehicle with this code, it is not recommended as it can lead to discomfort due to temperature control issues. It is best to address the problem promptly to avoid further complications.

5. How can I repair OBDII code B0413 Main Temperature Control Feedback Circuit?

- Repairing this code involves replacing the faulty main temperature control sensor, repairing or replacing damaged wiring or connectors in the feedback circuit, or addressing any issues with the HVAC control module.

6. Will OBDII code B0413 Main Temperature Control Feedback Circuit affect my vehicle's performance?

- While this code may not directly impact the performance of the vehicle, it can affect the comfort of the driver and passengers by causing temperature control issues in the cabin.

7. Can a DIY enthusiast fix OBDII code B0413 Main Temperature Control Feedback Circuit?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this code. However, it is recommended to consult a professional mechanic for accurate diagnosis and proper repairs.

8. Is OBDII code B0413 Main Temperature Control Feedback Circuit a common issue in vehicles?

- This code is not as common as some other OBDII codes, but it can occur in vehicles with electronic HVAC systems that experience sensor or wiring issues related to temperature control.

9. How long does it typically take to repair OBDII code B0413 Main Temperature Control Feedback Circuit?

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

10. Can resetting the OBDII code B0413 Main Temperature Control Feedback Circuit resolve the problem?

- Resetting the code may temporarily clear the error from the system, but if the underlying issue is not addressed, the code is likely to reappear. It is best to diagnose and repair the root cause of the problem.