If exhaust gas re-circulation rate is higher than set-point, ECT sets DTC P04020000. This fault might be caused by stuck open or damaged on EGR valve.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal monitoring | 1. Poor connector connection 2. Defected EGR valve disc 3. High pressure on exhaust system | |
Enable Conditions |
•
Engine running | ||
Threshold Value |
•
Exhaust gas re-circulation rate is below set-point | ||
Diagnostic Time |
•
- | ||
Fail Safe | Engine OFF |
•
No | |
EGR Off |
•
No | ||
Torque Limit |
•
No | ||
MIL |
•
Off | ||
