Nissan Sentra B18 (2020-2025) Service Manual: Fuel Rail Pressure Sensor

Component Inspection

1. CHECK FUEL RAIL PRESSURE (FRP) SENSOR

   With CONSULT

   1. Turn ignition switch OFF.

   2. Reconnect harness connector disconnected.

   3. Start engine and warm it up to normal operating temperature.

   4. Select “FUEL PRES SEN V” in “DATA MONITOR” mode of “ENGINE” using CONSULT and check the indication under the following condition.

      Monitor item	Condition		Indication
      FUEL PRES SEN V	Engine: After warming up Selector lever: P or N position (CVT models), Neutral position (M/T models) A/C switch: OFF No load	Engine speed: Idle	0.820 – 1.140 V
      		Revving engine from idle to 4,000 rpm quickly	0.820 – 2.900 V

   Without CONSULT

   1. Turn ignition switch OFF.

   2. Reconnect harness connector disconnected.

   3. Start engine and warm it up to normal operating temperature.

   4. Check FRP sensor signal voltage.

      ECM			Condition	Voltage
      Connector	+	−
      	Terminal
      F24	44	45	[Engine is running] Engine warm-up condition Engine speed: Idle	0.82 – 1.14 V
      			[Engine is running] Engine warm-up condition Revving engine from idle to 4,000 rpm quickly	0.82 – 2.9 V

   Is inspection result normal?

   YES >>

   INSPECTION END

   NO >>

   Replace FRP sensor. Refer to Exploded View.

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