P0406 is set when feed back EGR valve position out of low limit position for 0.1 second. In this case, check that stuck of EEGR actuator, air leakage of intake line.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Feed back position monitoring |
•
EGR actuator stuck
•
EGR actuator component
•
Air leakage of intake line | ||
Enable Conditions |
•
IG OFF | |||
Threshold Value |
•
Feed back EGR valve position out of low limit position | |||
Diagnostic Time |
•
10 msec. | |||
Fail Safe | Fuel cut | NO | ||
EGR Off | NO | |||
Fuel Limit | NO | |||
MIL | NO | |||
