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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Engine Control System - SFI System Diagnostics (2 Of 4)) >> DTC P043E Evaporative Emission System Reference Orifice Clog Up; DTC P043F Evaporative Emission System Reference Orifice High Flow; DTC P2401 Evaporative Emission Leak Detection Pump Stuck OFF; DTC P2402 Evaporative Emission Leak Detection Pump Stuck ON; DTC P2419 Evaporative Emission System Switching Valve Control Circuit Low >> DTC Summary

DTC Summary

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

DTC Monitoring Item Malfunction Detection Condition Trouble Area Detection Timing Detection Logic
P043E Reference orifice clogged P043E, P043F, P2401, P2402 and P2419 present when one of the following conditions met during key-off EVAP monitor
  • Reference orifice clogged
  • Reference orifice high-flow
  • Leak detection pump OFF malfunction
  • Leak detection pump ON malfunction
  • Vent valve ON (closed) malfunction
  • 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 engine switch off 2 trip
P043F Reference orifice high-flow
P2401 Leak detection pump stuck OFF
P2402 Leak detection pump stuck ON
P2419 Vent valve stuck closed

HINT

The reference orifice is located inside the canister pump module

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