P042E-71: EGR “A” Control Stuck Open – Actuator Stuck

Code/Lamp Status Cause / Probable Trouble Area Customer Symptom / Fault
Effects (on Vehicle)
Fault Code : P042E-71
MIL : ON
CEL : OFF
Red. Torque :

1. EGR valve connector loose/not connected
2. EGR actuator HB short to ground/battery
3. Wiring Harness problem
4. EGR actuator defective/Struck open
5. High back pressure in the exhaust
6. NOx and DPF regeneration
   inhibited
7. Drivability affected in cold
   conditions

Fault Detection
Condition
If the difference in EGR valve demand and actual position is higher than calibrated
threshold for a calibrated time, fault will be set.
Normal Operating
Condition
0 % to 85 % EGR valve position
Healing Condition 3 Driving cycles