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DTC P2404

DTC P2404 EVAP system leak detection pump sense circuit range/performance problem
DETECTION CONDITION 
  • The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the time in which the pump load current reaches the reference current value is not within the specification after the PCM obtains the reference current value, the PCM determines that there is an EVAP system leak detection pump sense circuit range/performance problem.

Diagnostic support note 
  • This is an intermittent monitor (EVAP system).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • EVAP hose bending
  • Air filter clogging
  • PCM malfunction
DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA (MODE 12) AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED 
  • Have the FREEZE FRAME DATA (Mode 12) and DIAGNOSTIC MONITORING TEST RESULTS (EVAP system related) been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA (Mode 12) and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT EVAP HOSE FOR BENDING 
  • Inspect the EVAP hose for bending.
  • Is there any malfunction?
 Yes Repair or replace the malfunctioning EVAP hose, then go to Step 5.
No Go to the next step.
4 INSPECT AIR FILTER FOR CLOGGING 
 Yes Replace the air filter, then go to the next step.
EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM REMOVAL/INSTALLATION ).
No Go to the next step.
5 VERIFY TROUBLESHOOTING OF DTC P2404 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS.

    (See AFTER REPAIR PROCEDURE ).

  • Perform the evaporative system test using the M-MDS.

    (See ENGINE CONTROL SYSTEM OPERATION INSPECTION ).

  • Is the same DTC present?
    NOTE:
    • If the evaporative system test function is not available, perform the following procedure.
  • Perform the DRIVE MODE 6 (EVAP System Repair Verification Drive Mode).

    (See OBD-II DRIVE MODE ])

  • Is the PENDING CODE the same as the DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
No Go to the next step.
6 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No DTC troubleshooting completed.
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