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Home >> Toyota >> 2009 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine Control System (1AR-FE) - DTC P0125 - P0500) >> DTC P0455 Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456 Evaporative Emission Control System Leak Detected (Very Small Leak) >> DTC Summary

DTC Summary

WARNING: This page is about a different variant/trim than selected.
DTC SUMMARY

DTC No. Monitoring Item Malfunction Detection Condition Trouble Area Detection Timing Detection Logic
P0455 EVAP gross leak Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure measured at start and at end of leak check.
If stabilized pressure higher than [second reference pressure x 0.2], ECM determines that EVAP system has large leak.
  • Fuel cap (loose)
  • Leak from EVAP line (Canister - Fuel tank)
  • Leak from EVAP line (Purge VSV - Canister)
  • Canister pump module
  • Leak from fuel tank
  • Leak from canister
While ignition switch off 2 trip
P0456 EVAP small leak Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure measured at start and at end of leak check.
If stabilized pressure between second reference pressure and [second reference pressure x 0.2], ECM determines that EVAP system has small leak.
  • Fuel cap (loose)
  • Leak from EVAP line (Canister - Fuel tank)
  • Leak from EVAP line (Purge VSV - Canister)
  • Canister pump module
  • Leak from fuel tank
  • Leak from canister
While ignition switch off 2 trip