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2016 TOYOTA COROLLA
1.8L I4•FWD•CVT•gas•2ZR-FE
1 active safety recall on this vehicle — view recalls
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Repairs395Labor499Torque3375Fluid7DTC1931Battery1Maintenance0Recalls1
P0450low severityPowertrain

Evaporative Emission System Pressure Sensor/Switch Malfunction

on 2016 Toyota Corolla 1.8L I4 · FWD

What this code means

The PCM detected a fault with the EVAP pressure sensor or switch. This can prevent accurate monitoring of fuel vapor system pressure.

Symptoms

  • Check engine light on
  • Failed emissions test
  • No driveability change

Common causes

  • Faulty EVAP pressure sensor
  • Wiring or connector fault
  • Damaged fuel tank or vapor lines
  • Failed PCM input circuit

Diagnostic steps

  1. Retrieve code and freeze frame
  2. Inspect pressure sensor wiring
  3. Test sensor signal and reference voltage
  4. Verify EVAP system integrity
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