OBD Guide

B0202

Front Blower Motor Power Circuit Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Heater fan not working
  • Inability to adjust fan speed
  • Blown fuse

Causes

  • Broken wiring harness
  • Faulty fan relay
  • Blown fuse
  • Faulty heater fan
  • Poor contact in connectors
  • HVAC control unit malfunction

How to Fix

  1. Check the fan circuit fuse
  2. Check fan relay
  3. Inspect the wiring harness and connectors
  4. Check fan operation
  5. Check the voltage at the fan connector
  6. Diagnose the HVAC control unit if necessary

Related codes

Error B0202 by Vehicle Brand