If rail pressure is below threshold value by 200 bar or is lower than minimum pressure while rail pressure is controlled by FPCV, ECM sets DTC P118600. This fault might be caused by too much fuel return of common rail or faulty RPS.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring | 1. Poor connector connection 2. Stuck closed FPCV 3. Stuck opened FPCV 4. Faulty RPS | ||
Enable Condition |
•
Engine running | |||
Threshold Value | Case 1 |
•
Rail pressure is higher than actual rail pressure | ||
Case 2 |
•
Rail pressure is lower than minimum pressure | |||
Case 3 |
•
Target pressure and actual rail pressure deviation exceeds certain amount and fuel flow volume is more than certain amount | |||
Detecting Time | Case 1 |
•
1 sec. | ||
Case 2 |
•
300 msec. | |||
Case 3 |
•
750 msec. | |||
Fail Safe | MIL |
•
On (Case 1, 2) | ||
Torque Limit |
•
Yes (Case 1) | |||
Fuel Cut |
•
Yes (Case 2) | |||
LNT Regeneration OFF |
•
Yes (Case 1) | |||
