OBD Guide

P0444

EVAP System Purge Control Valve A Circuit Open

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

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Smell of gasoline in the cabin
  • Problems starting the engine

Causes

  • Broken purge valve wires
  • Faulty EVAP purge valve
  • Damaged wiring harness
  • Relay problems
  • Oxidation of contacts
  • Corrosion of connectors

How to Fix

  1. Check the integrity of the purge valve wiring harness
  2. Check the resistance of the purge valve
  3. Check voltage at valve connector
  4. Replace purge valve if necessary
  5. Clean or replace connectors if corroded

Related codes

Error P0444 by Vehicle Brand