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 P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P0450-15: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P0450-2F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [12/2019 - 10/2022] >> 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
P0450-11 Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground EVAP pressure is less than 42.110 kPa (abs) [6.106 psi (abs)] for 0.5 seconds or more.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • ECM
Comes on DTC stored SAE Code: P0452
P0450-15 Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open EVAP pressure is higher than 123.761 kPa (abs) [17.945 psi (abs)] for 0.5 seconds or more.
  • Canister pump module
  • Connector/wire harness (Canister pump module - ECM)
  • ECM
Comes on DTC stored SAE Code: P0453
P0450-2F Evaporative Emission System Pressure Sensor/Switch Signal Erratic Canister pressure sensor output voltage fluctuates frequently for a certain amount of time.
  • 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: P0451
DTC No. Monitoring Item Detection Timing Detection Logic SAE Code
P0450-11 Canister pressure sensor (built into canister pump module) voltage low
  • Ignition switch ON
  • EVAP monitoring (ignition switch off)
1 trip P0452
P0450-15 Canister pressure sensor (built into canister pump module) voltage high
  • Ignition switch ON
  • EVAP monitoring (ignition switch off)
1 trip P0453
P0450-2F Canister pressure sensor abnormal voltage fluctuation (Noise monitor)
  • EVAP monitoring (ignition switch off)
  • Engine running
2 trip P0451

HINT: 

The canister pressure sensor is built into the canister pump module.