OBD Guide

B0234

Air Mix Door Range Error

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect air temperature from the deflectors
  • No temperature change during adjustment
  • Noises from the climate control area
  • Uneven airflow

Causes

  • Air mixing damper jammed
  • Damper motor malfunction
  • Problems with the throttle position sensor
  • Open or short circuit in wiring harness
  • Malfunction of the climate control control unit

How to Fix

  1. Check the mechanical movement of the damper
  2. Check the operation of the damper motor
  3. Check the throttle position sensor
  4. Check the integrity of the wiring harness
  5. If necessary, replace faulty components
  6. Reset the error and check the system operation

Related codes

Error B0234 by Vehicle Brand