OBD Guide

B1234

Short In The Driver Side Air Mix Control Motor Circuit

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–111 (est.)

Symptoms

  • Inability to adjust air temperature on the driver's side
  • Incorrect operation of the climate system
  • Hot or cold air is supplied without the possibility of adjustment

Causes

  • Wiring harness damage
  • Malfunction of the air mixture adjustment motor
  • Problems with the climate control unit
  • Short circuit in the motor power supply circuit

How to Fix

  1. Check the wiring harness for damage
  2. Check the operation of the air mixture adjustment motor
  3. Check the climate control unit
  4. Replace faulty components

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