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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 (Engine Control System (2AZ-FE)) >> SFI System >> DTC P2401 Evaporative Emission Leak Detection Pump Stuck OFF; DTC P2402 Evaporative Emission Leak Detection Pump Stuck ON >> DTC Summary

DTC Summary

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
DTC SUMMARY

DTCs Monitoring Items Malfunction Detection Conditions Trouble Areas Detection Timings Detection Logic
P2401 Leak detection pump stuck OFF P043E, P043F, P2401, P2402 and P2419 present when one of following conditions met during key-off EVAP monitor:
  • EVAP pressure just after reference pressure measurement greater than -1 kPa-g (-7.5 mmHg-g)
  • Reference pressure less than -4.85 kPa-g (-36.4 mmHg-g)
  • Reference pressure greater than -1.057 kPa-g (-7.93 mmHg-g)
  • Reference pressure not saturated
  • Reference pressure difference between first and second 0.7 kPa-g (5.25 mmHg-g) or more

HINT:
Typical example values
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • 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
While ignition switch OFF 2 trip
P2402 Leak detection pump stuck ON
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • 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
While ignition switch OFF 2 trip

HINT:

The leak detection pump is built into the canister pump module.