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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (Engine Control System (2UR-GSE) - Diagnostic Codes (4 Of 4)) >> SFI System >> DTC P2420: Evaporative Emission Pressure Switching Valve Stuck OFF [11/2021 - ] >> DTC Summary

DTC Summary

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2420 Evaporative Emission Pressure Switching Valve Stuck OFF Following condition is met during key-off EVAP monitor:
EVAP pressure change when vent valve closed (on) less than 0.3 kPa(gauge) [2.25 mmHg(gauge)]
  • Canister pump module (reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • Canister (filter inside canister clogged)
  • ECM
 Comes on DTC stored
DTC No. Monitoring Item Detection Timing Detection Logic
P2420 Vent valve stuck open (vent) While engine switch off 2 trip

HINT: 

The vent valve is built into the canister pump module.

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