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Home >> Toyota >> 2006 >> Matrix Base, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (2ZZ-GE)) >> SFI System >> DTC P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low; DTC P2402 Evaporative Emission System Leak Detection Pump Control Circuit High >> Description
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DTC P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low; DTC P2402 Evaporative Emission System Leak Detection Pump Control Circuit High: Description

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

Refer to EVAP SYSTEM  .

DTC TROUBLE DETECTION REFERENCE

DTCs Monitoring Item Malfunction Condition Trouble Area Detection Timing Detection Period
P2401 Vacuum pump stuck OFF (built-in pump module) To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module through 0.02 inch orifice and pressure is measured.
If one of following conditions is met, ECM sets pump module related DTCs: P043E P043E, P043F, P2401, P2402 and P2419:
  • Reference pressure is -1.2 kPa or higher
  • Reference pressure is -4.3 kPa or lower
  • Reference pressure is not saturated within 60 seconds
  • Pump module
  • Connector / wire harness Pump module - ECM)
  • ECM
 Ignition OFF 2 trips
P2402 Vacuum pump stuck ON (built-in pump module)
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