DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 50 (Engine Control System (A25A-FXS) - Diagnostic Codes (P0400-P0450)) >> SFI System >> DTC P043E-00: Evaporative Emission System Leak Detection Reference Orifice Low Flow; DTC P043F-00: Evaporative Emission System Leak Detection Reference Orifice High Flow; DTC P0446-72: EVAP System Vent Valve Stuck Open Actuator Stuck Open; DTC P2400-7E: Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On; DTC P2400-7F: Evaporative Emission System Leak Detection Pump Control Circuit 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
P043E-00 Evaporative Emission System Leak Detection Reference Orifice Low Flow Reference orifice detected as clogged during key-off EVAP monitor.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored
  • SAE Code: P043E
  • DTC for Mexico Models: Does not apply
P043F-00 Evaporative Emission System Leak Detection Reference Orifice High Flow Reference orifice flow high during key-off EVAP monitor.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored
  • SAE Code: P043F
  • DTC for Mexico Models: Does not apply
P0446-72 EVAP System Vent Valve Stuck Open Actuator Stuck Open Vent valve on (closed) malfunction detected during key-off EVAP monitor.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored
  • SAE Code: P2421
  • DTC for Mexico Models: Does not apply
P2400-7E Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On Leak detection pump on malfunction detected during key-off EVAP monitor.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored
  • SAE Code: P2402
  • DTC for Mexico Models: Does not apply
P2400-7F Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off Leak detection pump off malfunction detected during key-off EVAP monitor.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored
  • SAE Code: P2401
  • DTC for Mexico Models: Does not apply

HINT: 

The reference orifice is located inside the canister pump module.

DTC No. Monitoring Item Detection Timing Detection Logic SAE Code
P043E-00 Reference orifice low flow EVAP monitoring
(ignition switch off)		 2 trip P043E
P043F-00 Reference orifice high flow P043F
P0446-72 Vent valve (built into canister pump module) stuck open P2421
P2400-7E Leak detection pump (built into canister pump module) stuck on P2402
P2400-7F Leak detection pump (built into canister pump module) stuck off P2401
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