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Home >> Toyota >> 2016 >> Corolla S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Engine Control System (2ZR-FAE) - Diagnostic Codes (4 Of 8) (Model Code: ZRE172)) >> SFI System >> DTC P0455, P0456; Evaporative Emission Control System Leak Detected (Gross Leak) [08/2013 - 08/2016] >> 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
P0455 Evaporative Emission Control System Leak Detected (Gross Leak) Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure is measured. Reference pressure is measured at start and end of leak check.
If stabilized pressure is higher than [second reference pressure x 0.2], ECM determines that EVAP system has a large leak.
  • Fuel cap (loose)
  • Leakage from EVAP line (canister - fuel tank)
  • Leakage from EVAP line (purge VSV - canister)
  • Leakage from canister pump module
  • Leakage from fuel tank
  • Leakage from canister
Comes on DTC stored
P0456 Evaporative Emission Control System Leak Detected (Very Small Leak) Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure is measured. Reference pressure is measured at start and end of leak check.
If stabilized pressure is higher than second reference pressure, ECM determines that EVAP system has a small leak.
  • Fuel cap (loose)
  • Leakage from EVAP line (canister - fuel tank)
  • Leakage from EVAP line (purge VSV - canister)
  • Leakage from canister pump module
  • Leakage from fuel tank
  • Leakage from canister
Comes on DTC stored
DTC No. Monitoring Item Detection Timing Detection Logic
P0455 EVAP gross leak While ignition switch off 2 trip
P0456 EVAP small leak While ignition switch off 2 trip