AutoCodes – Chevrolet – B0423 2017 Chevrolet Silverado

B0423 2017 Chevrolet Silverado Code - Right 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 Passenger Air Temperature Actuator, Passenger Air Temperature Actuator harness is open or shorted, Passenger 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: B0423 2017 Chevrolet Silverado indicates Right Temperature Control Feedback Circuit.
Common causes: Common causes include Faulty Passenger Air Temperature Actuator, Passenger Air Temperature Actuator harness is open or shorted, Passenger 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 548

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 B0423 2017 Chevrolet Silverado 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 B0423 2017 Chevrolet Silverado - Right Temperature Control Feedback Circuit - AutoCodes.com — B0423 2017 Chevrolet Silverado Code - Right Temperature Control Feedback Circuit

What does this mean?

What are the Possible Causes of the DTC B0423 2017 Chevrolet Silverado?

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

How to Fix the DTC B0423 2017 Chevrolet Silverado?

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

B0423:02 Temperature Control 2 Feedback Circuit Short to Ground
B0423:05 Temperature Control 2 Feedback Circuit Short to Battery or Open
B0423:61 Temperature Control 2 Circuit Actuator Stuck

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0423 2017 Chevrolet Silverado 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 B0423 2017 Chevrolet Silverado code?

Need more information on how to fix the B0423 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0423 2017 Chevrolet Silverado 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 B0423 2017 Chevrolet Silverado Code

1. What are common symptoms of OBDII code B0423 in a 2017 Chevrolet Silverado?

The common symptoms of code B0423 include inconsistent or inaccurate temperature control on the right side of the vehicle, such as the passenger side.

2. What can cause the OBDII code B0423 in a 2017 Chevrolet Silverado?

The code B0423 is typically triggered by a malfunction in the right temperature control feedback circuit, which may be due to a faulty temperature control actuator or wiring issues.

3. How can I diagnose the OBDII code B0423 in my 2017 Chevrolet Silverado?

Diagnosing code B0423 involves using a scan tool to retrieve the specific fault code, testing the temperature control actuator, and checking the wiring and connectors for any signs of damage or corrosion.

4. Can I still drive my 2017 Chevrolet Silverado with OBDII code B0423?

While you may still be able to drive your vehicle with code B0423, it is recommended to address the issue promptly to ensure proper temperature control and prevent further damage to the HVAC system.

5. How do I repair OBDII code B0423 in a 2017 Chevrolet Silverado?

Repairing code B0423 often involves replacing the faulty temperature control actuator on the right side of the vehicle and addressing any wiring issues or connector problems.

6. Is OBDII code B0423 a serious issue in a 2017 Chevrolet Silverado?

While code B0423 may not directly affect the drivability of the vehicle, it can lead to discomfort due to inconsistent temperature control and should be addressed to maintain the functionality of the HVAC system.

7. Can a DIY enthusiast fix OBDII code B0423 in a 2017 Chevrolet Silverado?

Depending on your level of automotive knowledge and experience, replacing the temperature control actuator and addressing wiring issues related to code B0423 may be possible as a DIY repair.

8. What are the potential consequences of ignoring OBDII code B0423 in a 2017 Chevrolet Silverado?

Ignoring code B0423 can result in continued issues with temperature control on the right side of the vehicle, potential strain on the HVAC system, and increased discomfort for passengers.

9. How long does it typically take to repair OBDII code B0423 in a 2017 Chevrolet Silverado?

The repair time for code B0423 can vary based on the extent of the issue and your experience level, but it may take anywhere from 1-3 hours to diagnose and replace the faulty components.

10. Are there any preventive measures to avoid OBDII code B0423 in a 2017 Chevrolet Silverado?

To help prevent code B0423, it's recommended to perform regular maintenance on the HVAC system, including checking for any unusual temperature control issues and addressing them promptly.