P0446 OBD II Trouble Code Evaporative Emission Control System Incorrect Purge Flow

Symptoms of P0446 OBD II Trouble Code

  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM

Common Causes of P0446 OBD II Trouble Code

  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM