Nissan GT-R (R35) · Service Manual ENGINE

P0462, P0463 FUEL LEVEL SENSOR

VR38

P0462 P0463

Description


The fuel level sensor is mounted in the fuel level sensor unit.
The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combination meter sends the fuel level sensor signal to the ECM through the CAN communication line.
It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float.

DTC Logic

 
 DTC DETECTION LOGIC

NOTE：
  • If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
  • If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to DTC Logic (GT-R certified NISSAN dealer).

This diagnosis indicates the former, to detect open or short circuit malfunction.

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0462
Fuel level sensor circuit low input
An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors
    (The CAN communication line is open or shorted)
  • Harness or connectors
    (The sensor circuit is open or shorted)
  • Combination meter
  • Fuel level sensor
P0463
Fuel level sensor circuit high input
An excessively high voltage from the sensor is sent to ECM.

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK DTC WITH COMBINATION METER
 
 2.CHECK INTERMITTENT INCIDENT