Engine-Codes - Toyota - B1446 Toyota

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

- Code Popularity: 16,669 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B1446 Toyota?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Air Mix Damper Control Servo Motor
  • Air Mix Damper Control Servo Motor harness is open or shorted
  • Air Mix Damper Control Servo Motor circuit poor electrical connection
  • Faulty Air Conditioning Amplifier
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How to Fix the DTC B1446 Toyota?

Check 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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B1446 Toyota code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B1446 Toyota Code Mean?

The air mix damper servo sends pulse signals to indicate the damper position to the Air Conditioning Amplifier. The Air Conditioning Amplifier activates the motor (normal or reverse) based on these signals to move the air mix damper (driver seat) to the appropriate position. This adjusts the amount of air passing through the heater core after passing the evaporator and controls the temperature of the blown air.

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

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