Fuel Pressure Sensor; Operation Overview; Fuel Pressure Regulation - Polaris RZR PRO XP 2020 Service Manual

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EFI / FUEL SYSTEM

FUEL PRESSURE SENSOR

The fuel pressure sensor is mounted in-line in the fuel

line assembly. The sensor measures fuel pressure and

the data is read by the ECU. The ECU commands the

fuel pump control module, which powers the fuel pump to

the desired fuel pressure based on engine RPM and

Fuel pressure is controlled both mechanically and

electronically. At Key On Engine Off, and when the

engine is under boost the fuel pressure is controlled by a

75 psi regulator mounted in the fuel pump. At idle and

low RPM/load operation the fuel pressure is

electronically reduced and can be as low as 43.5 psi.

9850068 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual

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