See LR tech service bulletin LTB00052:
Summary:
A customer may report a concern of engine hesitation, poor performance, poor engine idle or poor starting.
Cause: Investigation using diagnostic equipment points to the fuel pressure sensor, which when renewed can rectify the problem. However, the root cause of this issue is likely to be corroded connections in the fuel pressure sensor harness connector and renewing the sensor alone may not permanently repair the problem.
Action: Should a customer express concern regarding the above and diagnosis indicates the fuel pressure sensor to be the cause, refer to the Service Procedure detailed in this bulletin to renew the sensor and harness connector.
Parts Required:
Description Part Number Quantity
Harness repair kit YMQ503320 1
Fuel pressure sensor STC4768 1
O-Ring MYX000040 1