AutoCodes – Chevrolet – B0424 Chevrolet

B0424 Chevrolet Code - Temperature Control Right 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 Right Air Temperature Actuator, Right Air Temperature Actuator harness is open or shorted, Right 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: B0424 Chevrolet indicates Temperature Control Right Feedback Circuit Actuator Range/Performance.
Common causes: Common causes include Faulty Right Air Temperature Actuator, Right Air Temperature Actuator harness is open or shorted, Right 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 4,869

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 B0424 Chevrolet 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 B0424 Chevrolet - Temperature Control Right Feedback Circuit Actuator Range/Performance - AutoCodes.com — B0424 Chevrolet Code - Temperature Control Right Feedback Circuit Actuator Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0424 Chevrolet?

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

How to Fix the DTC B0424 Chevrolet?

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 B0424 Chevrolet 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 B0424 Chevrolet code?

Need more information on how to fix the B0424 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0424 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B0424 Chevrolet Code

1. What are common symptoms of OBDII code B0424 in a Chevrolet related to the temperature control right feedback circuit actuator?

- Common symptoms include inconsistent or incorrect temperature control on the right side of the vehicle, fluctuating cabin temperature, and potential issues with the HVAC system.

2. What are the possible causes of OBDII code B0424 in a Chevrolet?

- The code B0424 may be triggered by a faulty temperature control actuator, wiring issues in the feedback circuit, a malfunctioning HVAC control module, or a damaged temperature control door.

3. How can I diagnose the cause of OBDII code B0424 in my Chevrolet?

- Diagnosing the issue may involve using a scan tool to retrieve the specific code, checking the wiring and connections related to the temperature control actuator, and testing the actuator's functionality using manufacturer-specific procedures.

4. Are there any quick fixes or temporary solutions for OBDII code B0424 in a Chevrolet?

- While temporary fixes may include resetting the HVAC system by disconnecting the car battery, it's essential to address the root cause of the issue to prevent further problems with the temperature control system.

5. Can I still drive my Chevrolet with OBDII code B0424 present?

- It is generally safe to drive the vehicle with this code, but it's recommended to have the issue diagnosed and repaired as soon as possible to avoid potential discomfort due to inconsistent temperature control.

6. Is it possible to repair OBDII code B0424 in a Chevrolet by myself, or should I seek professional help?

- Depending on your experience and access to tools, you may be able to address the issue yourself by replacing the faulty components or repairing the wiring. However, seeking professional help from a certified mechanic is recommended for accurate diagnosis and repair.

7. How much does it typically cost to repair OBDII code B0424 in a Chevrolet?

- The cost of repair can vary based on the specific cause of the issue, the labor rates in your area, and the parts needed for the repair. It's advisable to obtain quotes from different mechanics to compare prices.

8. Can extreme weather conditions contribute to triggering OBDII code B0424 in a Chevrolet?

- Yes, extreme temperature fluctuations or exposure to moisture can potentially affect the temperature control system components, leading to issues that trigger the B0424 trouble code.

9. Will resetting the trouble codes make OBDII code B0424 disappear permanently?

- Resetting the codes may temporarily clear the B0424 code, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

10. How long does it typically take to repair OBDII code B0424 in a Chevrolet?

- The repair time can vary depending on the exact cause of the issue, the availability of parts, and the mechanic's workload. In general, the repair process may take a few hours to a full day to complete.