Engine-Codes - Buick - B023A BUICK

B023A BUICK - HVAC Actuators Supply Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B023A BUICK Possible Causes

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

How is the B023A BUICK code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the B023A BUICK code

Labor: 1.0

The cost to diagnose the B023A BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B023A BUICK Meaning

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. With the switches and dials on the Heating, Ventilation, and Air Conditioning (HVAC) controls, air temperature door position, mode door position and recirculation door position can be selected. The selected values are passed to the HVAC Control Module via serial data. The HVAC control module supplies a 12 V reference voltage to the stepper motors and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motors move the appropriate doors into the calculated positions, in order to reach the desired positions.

More Information

Need more information on how to fix the B023A BUICK code?
Get Access to Factory Service Manuals

Need more help?

Get the B023a Buick code diagnosed by a professional: Find a repair shop in your area