Engine-Codes.com
Engine-Codes – Lexus – B1446 Lexus

B1446 Lexus Code - Air Mix Damper Control Servo Motor Circuit Driver Side

Quick Answer

The B1446 diagnostic trouble code (DTC) for Lexus vehicles specifically refers to an issue with the Air Mix Damper Control Servo Motor Circuit on the driver side. Common causes include Wiring or electrical connection issues in the air mix damper control circuit, Failure of the air mix damper control servo motor, Malfunctioning HVAC control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1446 Lexus indicates Air Mix Damper Control Servo Motor Circuit Driver Side.
Common causes
Common causes include Wiring or electrical connection issues in the air mix damper control circuit, Failure of the air mix damper control servo motor, Malfunctioning HVAC control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1446 Lexus Description

The B1446 diagnostic trouble code (DTC) for Lexus vehicles specifically refers to an issue with the Air Mix Damper Control Servo Motor Circuit on the driver side. This component is responsible for controlling the temperature of the air entering the cabin by adjusting the air mix damper position. When this circuit malfunctions, it can lead to a lack of proper temperature control inside the vehicle, affecting the comfort of the occupants.

OBDII Code B1446 Lexus - Air Mix Damper Control Servo Motor Circuit Driver Side
B1446 Lexus Code - Air Mix Damper Control Servo Motor Circuit Driver Side

Common Causes of B1446 Lexus

  1. Wiring or electrical connection issues in the air mix damper control circuit.
  2. Failure of the air mix damper control servo motor.
  3. Malfunctioning HVAC control module.
  4. Faulty temperature sensors in the HVAC system.
  5. Wear and tear of components over time.

Symptoms of B1446 Lexus

  1. Inconsistent or incorrect temperature output from the HVAC system.
  2. Inability to adjust the temperature settings on the climate control unit.
  3. Unusual noises coming from the HVAC unit when adjusting temperature.
  4. Airflow from vents may be weaker or stronger than usual.
  5. HVAC system may not respond to temperature adjustments at all.

How to Fix B1446 Lexus

  1. Begin by diagnosing the specific cause of the B1446 code using a diagnostic scan tool.
  2. Inspect the wiring and electrical connections related to the air mix damper control circuit for any signs of damage or corrosion.
  3. Test the air mix damper control servo motor to determine if it is functioning properly.
  4. Check the HVAC control module for any faults or malfunctions that may be triggering the code.
  5. Replace or repair any damaged components, such as wiring, servo motor, or control module, as necessary to resolve the issue.

Cost to Fix B1446 Lexus

The cost of repairing the B1446 code on a Lexus vehicle can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the parts for this repair, such as a new air mix damper control servo motor or HVAC control module, can range from $100 to $500. Labor costs at an auto repair shop typically range from $80 to $150 per hour, and the total repair time may vary depending on the complexity of the issue.

Need more information about the B1446 Lexus code?

Need more information on how to fix the B1446 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1446 Lexus 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 B1446 Lexus Code

1. What are the common symptoms of OBDII code B1446 in a Lexus related to the Air Mix Damper Control Servo Motor on the driver side?

The common symptoms include inconsistent air temperature from the HVAC system, the inability to adjust the temperature settings, or unusual noises coming from the air vents.

2. What are the possible causes of OBDII code B1446 in a Lexus indicating an issue with the Air Mix Damper Control Servo Motor on the driver side?

Possible causes include a faulty air mix damper control servo motor, damaged wiring or connectors, a malfunctioning HVAC control unit, or a problem with the air mix damper itself.

3. How can I diagnose OBDII code B1446 in a Lexus related to the Air Mix Damper Control Servo Motor on the driver side?

Diagnosis typically involves inspecting the air mix damper control servo motor and its wiring, testing the HVAC control unit, and checking for any obstructions or blockages in the air mix damper system.

4. Is it safe to continue driving my Lexus with OBDII code B1446 indicating an issue with the Air Mix Damper Control Servo Motor on the driver side?

It is generally not recommended to continue driving the vehicle with this code, as it can affect the proper functioning of the HVAC system and lead to discomfort while driving.

5. Can OBDII code B1446 in a Lexus be reset or cleared without addressing the underlying issue with the Air Mix Damper Control Servo Motor on the driver side?

While the code can be cleared temporarily, it is likely to reappear until the root cause of the problem is identified and resolved.

6. Are there any repair tips for fixing OBDII code B1446 in a Lexus related to the Air Mix Damper Control Servo Motor on the driver side?

Repair tips may include checking and repairing any damaged wiring, replacing the faulty air mix damper control servo motor, ensuring proper calibration of the HVAC system, and performing a thorough system reset.

7. How much does it typically cost to repair OBDII code B1446 in a Lexus due to an issue with the Air Mix Damper Control Servo Motor on the driver side?

Repair costs can vary depending on the extent of the issue, but they may involve parts replacement, labor costs, and potential diagnostic fees from a qualified mechanic or dealership.

8. Can a DIY enthusiast with automotive experience fix OBDII code B1446 in a Lexus related to the Air Mix Damper Control Servo Motor on the driver side?

While some experienced DIY enthusiasts may be able to tackle this repair, it is recommended to consult a professional mechanic or technician due to the complexity of the HVAC system and the need for precise calibration.

9. How long does it typically take to repair OBDII code B1446 in a Lexus associated with the Air Mix Damper Control Servo Motor on the driver side?

The repair time can vary depending on the exact cause of the issue and the expertise of the technician, but it may take a few hours to a full day to diagnose and fix the problem properly.

10. Will fixing OBDII code B1446 in a Lexus related to the Air Mix Damper Control Servo Motor on the driver side improve the overall performance and comfort of the vehicle?

Yes, addressing this code and resolving the underlying issue with the air mix damper control servo motor can restore proper HVAC functionality, ensuring consistent air temperature control and overall comfort for occupants.

Discuss the causes and fixes for B1446 Lexus OBDII Code

Submit a New Comment

Code B1446 Lexus comments

No comments found for this page.