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 [12/2019 - 10/2022] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different variant/trim than selected.
P2450: FUEL VAPOR-CONTAINMENT VALVE STUCK OPEN

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)] Condition 1 or 2
1. Fuel tank pressure change when vacuum introduction for canister Higher than 0.5 kPa [0.07 psi]
2. EVAP pressure when vacuum introduction for canister was complete Higher than [third reference pressure x 0.2]
P2451: FUEL VAPOR-CONTAINMENT VALVE STUCK CLOSE

Either of the following conditions is met Condition 1 or 2
1. Both of the following conditions are met Condition (a) and (b)
(a) Fuel tank pressure Higher than -2 kPa (gauge) [-0.3 psi (gauge)], and less than 3 kPa (gauge) [0.4 psi (gauge)]
(b) Fuel tank pressure change when vacuum introduction for fuel tank Less than 0.5 kPa [0.07 psi]
2. Both of the following conditions are met Condition (a) and (b)
(a) Fuel tank pressure -2 kPa (gauge) [-0.3 psi (gauge)] or less, or 3 kPa (gauge) [0.4 psi (gauge)] or higher
(b) EVAP pressure change when fuel vapor-containment valve is open Less than 0.9 kPa [0.1 psi]
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