The ECM sets DTC P0089 when the rail pressure is too high or low copared with the target rail pressure.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Max or Min error of Rationality check | 1. FPR(Fuel Pressure Regulator) 2. Low power supply to Fuel Pressure Sensor |
Enable Conditions |
•
3 sec after engine start | |
Threshold Value |
•
Min - Rail pressure controller < 2.3 MPa(23 bar/333.58 psi)
•
Max - Rail pressure controller > 2.3 MPa(23 bar/333.58 psi) | |
Diagnostic Time |
•
5 sec. | |
MIL ON Condition |
•
2 driving cycles |
