OBD Guide

P0483

Fan Rationality Check

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

Symptoms

  • Engine overheating
  • The fan does not turn on
  • The fan runs constantly
  • Reduced cooling efficiency

Causes

  • Open or short circuit in the fan circuit
  • Faulty fan relay
  • Damaged cooling fan
  • Problems with the engine control unit
  • Damaged wiring harness

How to Fix

  1. Check the continuity of the fan circuit
  2. Check fan relay
  3. Check the fan itself for damage
  4. Check the condition of the wiring harness
  5. If necessary, replace faulty components

Related codes

Error P0483 by Vehicle Brand