DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (4 Of 6) >> SFI System >> DTC P0441-7E: Evaporative Emission System Incorrect Purge Flow Actuator Stuck On; DTC P0441-7F: Evaporative Emission System Incorrect Purge Flow Actuator Stuck Off; DTC P0441-9C: Evaporative Emission System Incorrect Purge Flow Low/Insufficient Flow [12/2019 - 10/2022] >> DTC Summary

DTC Summary

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P0441-7E Evaporative Emission System Incorrect Purge Flow Actuator Stuck On Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure is measured at start and at end of leak check.
If stabilized pressure higher than [second reference pressure x 0.2], ECM determines that purge VSV stuck open.
  • Fuel tank cap (loose)
  • Short in purge VSV circuit
  • Purge VSV
  • Canister pump module
  • ECM
Comes on DTC stored SAE Code: P0441
DTC for Mexico Models:
- Does not apply
P0441-7F Evaporative Emission System Incorrect Purge Flow Actuator Stuck Off After EVAP leak check performed, purge VSV turned on (open), and atmospheric air introduced into EVAP system. Reference pressure is measured at start and at end of check.
If pressure does not return to near atmospheric pressure, ECM determines that purge VSV stuck closed.
  • Open or short in purge VSV circuit
  • Purge VSV
  • Canister pump module
  • Purge line
  • Canister (filter inside canister clogged)
  • No. 2 charcoal canister filter (filter inside canister clogged)
  • ECM
Comes on DTC stored SAE Code: P0441
DTC for Mexico Models:
- Does not apply
P0441-9C Evaporative Emission System Incorrect Purge Flow Low/Insufficient Flow While engine running, following conditions successively met:
  • Negative pressure not created in EVAP system when purge VSV turned on (open)
  • EVAP system pressure change less than 0.154 kPa (gauge) [0.022 psi (gauge)] when vent valve turned on (closed)
  • Atmospheric pressure change before and after purge flow monitor less than 0.1 kPa (gauge) [0.015 psi (gauge)]
  • Open or short in purge VSV circuit
  • Purge VSV
  • Canister pump module
  • Purge line
  • Canister (filter inside canister clogged)
  • No. 2 charcoal canister filter (filter inside canister clogged)
  • ECM
Comes on DTC stored SAE Code: P0441
DTC for Mexico Models:
- Does not apply
DTC No. Monitoring Item Detection Timing Detection Logic SAE
P0441-7E Purge VSV (Vacuum Switching Valve) stuck open EVAP monitoring
(ignition switch off)
2 trip P0441
P0441-7F Purge VSV stuck closed EVAP monitoring
(ignition switch off)
2 trip P0441
P0441-9C Purge flow Engine running 2 trip P0441