DTC Troubleshooting: P0401 (80)
|DTC P0401:||EGR Insufficient Flow|
|1.||Turn the ignition switch ON (II).|
|2.||Do the DTC CLEAR in the CLEAR MENU with the HDS.|
|3.||Do the EGR TEST in the INSPECTION MENU with the HDS.|
Is the result OK?
YES - Go to 4.
NO - Go to 6.
|4.||Test-drive under following conditions.|
|5.||Monitor the OBD STATUS for DTC P0401 in the DTCs MENU with the HDS.|
is it FAILED?
NO - If it is PASSED, intermittent failure, system is OK at this time. If it is EXECUTING, keep the driving condition continually untill a result comes on. If it is Out of CONDITION, go to 4 and recheck.
|6.||Turn the ignition switch OFF.|
|7.||Replace the EGR valve.|
|8.||Turn the ignition switch ON (II).|
|9.||Do the ECM RESET in the CLEAR MENU with the HDS.|
|10.||Do the ETCS learn procedure.|
|11.||Test-drive under following conditions.|
|12.||Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.|
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0401 is indicated, check for poor connections or loose terminals at the EGR valve and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting.
NO - Go to 13.
|13.||Monitor the OBD STATUS for DTC P0401 in the DTCs MENU with the HDS.|
Is it PASSED?
YES - Troubleshooting is complete.n