DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 55 (Engine Control System (A25A-FXS) - Diagnostic Codes (P2270-P2610)) >> SFI System >> DTC P2450-7E: Evaporative Emission System Switching Valve Actuator Stuck On; DTC P2451-7F: Evaporative Emission System Switching Valve Actuator Stuck Off [10/2022 - 11/2023] >> DTC Summary

DTC Summary

WARNING: This page is about a different variant/trim than selected.
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P2450-7E Evaporative Emission System Switching Valve Actuator Stuck On Either of the following conditions is met when fuel tank pressure is higher than -2 kPa (gauge) [-0.3 psi (gauge)], and less than 3 kPa (gauge) [0.4 psi (gauge)].
  • Fuel tank pressure change when vacuum introduction for canister is higher than 0.5 kPa [0.07 psi]
  • EVAP pressure when vacuum introduction for canister was complete is higher than (third reference pressure x 0.2)
  • Fuel vapor-containment valve
  • Connector/wire harness (fuel vapor-containment valve - ECM)
  • ECM
 Comes on DTC stored
  • SAE Code: P2450
  • DTC for Mexico Models: Does not apply
P2451-7F Evaporative Emission System Switching Valve Actuator Stuck Off Either of the following conditions is met:
  • Fuel tank pressure change when vacuum introduction for canister is less than 0.5 kPa [0.07 psi]
  • EVAP pressure change when fuel vapor-containment valve is open is less than 0.9 kPa [0.1 psi]
  • Fuel vapor-containment valve
  • Connector/wire harness (fuel vapor-containment valve - ECM)
  • ECM
 Comes on DTC stored
  • SAE Code: P2451
  • DTC for Mexico Models: Does not apply
DTC No. Monitoring Item Detection Timing Detection Logic SAE Code
P2450-7E Fuel vapor-containment valve stuck open EVAP monitoring
(ignition switch off)		 2 trip P2450
P2451-7F Fuel vapor-containment valve stuck close P2451
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