OBD Guide

B1236

Open In The Passenger Side Air Mix Control Motor Circuit

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

Symptoms

  • Incorrect operation of climate control on the passenger side
  • No response to temperature adjustment
  • Uneven air distribution in the cabin

Causes

  • Broken or damaged wires in the control circuit
  • Mixture control motor malfunction
  • Problems with the climate control module
  • Oxidation or corrosion of contacts in connectors

How to Fix

  1. Check the integrity of the wiring harness in the control circuit
  2. Diagnose the condition of the mixture control motor
  3. Check the contacts in the connectors for oxidation
  4. Replace motor or wiring harness if necessary

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