P0454 OBD II Trouble Code Evaporative Emission Control System Pressure Sensor Intermittent

Symptoms of P0454 OBD II Trouble Code

  • In most cases, there will be no symptoms exhibited with a code P0454
  • A slight decrease in fuel efficiency
  • MIL (malfunction indicator lamp) illumination

Common Causes of P0454 OBD II Trouble Code

  • Defective EVAP pressure sensor
  • Clogged fuel tank pressure relief valve
  • Open or shorted EVAP pressure sensor wiring or connectors
  • Cracked or broken charcoal canister

Severity of P0454 OBD II Trouble Code

Symptoms of this code may include: