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Home >> Toyota >> 2019 >> Sienna SE, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Engine Control System [2GR-FE] - Diagnostic Codes (3 Of 3) & Circuit Tests) >> SFI System >> DTC P2420: Evaporative Emission Pressure Switching Valve Stuck OFF [12/2015 - 08/2016] >> DTC Summary

DTC Summary

WARNING: This page is about a different car, the 2016 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Monitoring Item Malfunction Detection Condition Trouble Area Detection Timing Detection Logic
P2420 Vent valve stuck open (vent) Following condition met during key-off EVAP monitor:
  • EVAP pressure change when vent valve closed (ON) below 0.3 kPa(gauge) [2.25 mmHg(gauge)]
  • Canister pump module (reference orifice, vacuum pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • Canister assembly (filter inside canister clogged)
  • ECM
While ignition switch off 2 trip

HINT: 

The vent valve is built into the canister pump module.