P0459 OBD II Trouble Code EVAP Emission Purge Control Valve Circuit High

How to diagnose, repair, as well as symptoms and causes of a P0459 trouble code which is a high circuit condition in the EVAP emission purge control valve circuit. Also includes links to relevant forum topics on the code.

Symptoms of P0459 OBD II Trouble Code

  • Faulty fuse or relay
  • Faulty purge control valve
  • Faulty EVAP purge solenoid control
  • Engine wiring harness or connector electrical circuit problem
  • Purge control solenoid electrical circuit problem
  • PCM/ECM malfunction

Common Causes of P0459 OBD II Trouble Code

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