DTC Troubleshooting: P04DF
DTC P04DF: EVAP System High Purge Flow Detected
Special Tools Required
?Vacuum Gauge 07YAJ-0010610
?Tube Joint Adapter 07410-5790503
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P04DF EVAP System High Purge Flow Detected
      

1.
Problem verification:

Problem verification
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Select the EVAP TEST in the INSPECTION MENU, then select the FUNCTION TEST with the HDS.
NOTE: If the test could not be completed because of another DTC, do the troubleshooting for that DTC.

  

Is the result OK?

     
YES
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the FTP sensor, the EVAP canister purge valve, the EVAP canister vent shut valve, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
     
NO
     
     
     
Go to step 2.
2.
EVAP canister purge valve open stuck check:

EVAP canister purge valve open stuck check
?1.
Disconnect the vacuum hose (purge line) (A) from the EVAP canister purge valve (B) in the engine compartment, then connect a vacuum gauge and a vacuum pump/gauge to the hose as shown.
NOTE: Wrap the thread seal tape around the threads of the vacuum gauge, when connecting the vacuum gauge to the tube joint adapter.


?2.
Apply about 2 kPa (0.6 inHg, 15 mmHg) of vacuum to the purge valve.

Does it hold vacuum?

     
YES
     
     
     
     
NO