OBD Guide

B0199

Front Blower Motor Power Circuit Range/Performance

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Heater fan does not work
  • The fan only runs at one speed
  • Intermittent fan operation
  • Increased fan noise

Causes

  • Open or short grips in the wiring harness
  • Fan relay fault
  • Fan motor damage
  • Contact corrosion
  • Control unit malfunction

How to Fix

  1. Check the fan circuit fuse
  2. Check fan relay
  3. Inspect the wiring harness for damage
  4. Check the voltage at the fan motor connector
  5. Replacing the fan motor if necessary
  6. Reset the error and check the system operation

Related codes

Error B0199 by Vehicle Brand