Engine-Codes - Buick - B0413 BUICK

B0413 BUICK - Temperature Control 1 Feedback Circuit

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

B0413 BUICK Possible Causes

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

How is the B0413 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.

Tech Notes

DTC B0413 02 - Temperature Control 1 Feedback Circuit Short to Ground
DTC B0413 05 - Temperature Control 1 Feedback Circuit Short to Battery or Open
DTC B0413 61 - Temperature Control 1 Feedback Circuit Actuator Stuck Open

What is the cost to diagnose the B0413 BUICK code

Labor: 1.0

The cost to diagnose the B0413 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.

Possible Symptoms

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

B0413 BUICK Meaning

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.

More Information

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

Need more help?

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