B27A3 - Air Mix Door Motor

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

B27A3 Possible Causes

  • Faulty Air Mix Door Motor
  • Air Mix Door Motor harness is open or shorted
  • Air Mix Door Motor circuit poor electrical connection
  • Faulty A/C Auto Amplifier

How do I fix code B27A3?

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's pins.

Cost of diagnosing the B27A3 code

Labor: 1.0

The cost of diagnosing the B27A3 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B27A3 Description

A/C Auto Amplifier operates intake door motor according to the target value of the Potentiometer Balance Resister (PBR). The Diagnostic Trouble Code (DTC) when the A/C Auto Amplifier detects a short or open circuit of air mix door motor drive signal terminal 2.
OBDII Code B27a3 - Air Mix Door Motor - AutoCodes.com

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