Nissan Pathfinder (2012 year). Manual - part 276

P0456 EVAP CONTROL SYSTEM

EC-289

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24.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000007358198

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)

1. Wipe clean valve housing.

2. Check valve opening pressure and vacuum.

3. If out of specification, replace fuel filler cap as an assembly.

Refer to 

FL-6, "Removal and Installation"

.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incor-

rect fuel filler cap is used, the MIL may come on.

SEF445Y

Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

2

, 2.22 - 

2.90 psi)

Vacuum:

−

6.0 to 

−

3.3 kPa (

−

0.061 to 

−

0.034 kg/cm

2

, 

−

0.87 to 

−

0.48 psi)

SEF943S

August 2012

2012 Pathfinder

EC-290

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P0460 FUEL LEVEL SENSOR

P0460 FUEL LEVEL SENSOR

Component Description

INFOID:0000000007358199

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 vari-

able resistor. Fuel level sensor output voltage changes depending on

the movement of the fuel mechanical float.

On Board Diagnosis Logic

INFOID:0000000007358200

NOTE:

•

If DTC P0460 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

•

If DTC P0460 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.

 

Refer

to 

EC-311, "Description"

.

When the vehicle is parked, the fuel level in the fuel tank is naturally stable. It means that output signal of the

fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunc-

tion is detected.

DTC Confirmation Procedure

INFOID:0000000007358201

1. If DTC Confirmation Procedure has been previously conducted, always perform the following before con-

ducting the next step.

a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c.

Turn ignition switch OFF and wait at least 10 seconds.

2. Start engine and wait maximum of 2 consecutive minutes.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to 

EC-290, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358202

1.

CHECK COMBINATION METER FUNCTION

Refer to 

GI-33, "Work Flow"

.

OK or NG

OK

>> GO TO 2.

NG

>> Go to 

MWI-34, "Component Function Check"

.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

BBIA0529E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0460
0460

Fuel level sensor circuit 
noise

Even though the vehicle is parked, a signal be-
ing varied is sent from the fuel level sensor 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

August 2012

2012 Pathfinder

P0460 FUEL LEVEL SENSOR

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INSPECTION END

August 2012

2012 Pathfinder

EC-292

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P0461 FUEL LEVEL SENSOR

P0461 FUEL LEVEL SENSOR

Component Description

INFOID:0000000007358203

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 CAN communication line.

It consists of two parts, one is mechanical float and the other is vari-

able resistor. Fuel level sensor output voltage changes depending on

the movement of the fuel mechanical float.

On Board Diagnosis Logic

INFOID:0000000007358204

NOTE:

•

If DTC P0461 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

•

If DTC P0461 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-311, "Description"

.

Driving long distances naturally affect fuel gauge level.

This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has

been driven.

Overall Function Check

INFOID:0000000007358205

Use this procedure to check the overall function of the fuel level sensor. During this check, a 1st trip DTC

might not be confirmed.

WARNING:

When performing the following procedure, always observe the handling of the fuel. Refer to 

FL-11,

"Removal and Installation"

.

TESTING CONDITION:

Before starting overall function check, preparation of draining fuel and refilling fuel is required.

 WITH CONSULT

NOTE:
Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30   (7-7/8 US gal, 6-5/

8 Imp gal) in advance.

1. Prepare a fuel container and a spare hose.

2. Release fuel pressure from fuel line, refer to 

EC-487, "Fuel Pressure Check"

.

3. Remove the fuel feed hose on the fuel level sensor unit.

4. Connect a spare fuel hose where the fuel feed hose was removed.

5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.

6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CONSULT.

7. Check “FUEL LEVEL SE” output voltage and note it.

8. Select “FUEL PUMP” in “ACTIVE TEST” mode with CONSULT.
9. Touch ON and drain fuel approximately 30   (7-7/8 US gal, 6-5/8 Imp gal) and stop it.

10. Check “FUEL LEVEL SE” output voltage and note it.
11. Fill fuel into the fuel tank for 30   (7-7/8 US gal, 6-5/8 Imp gal).

12. Check “FUEL LEVEL SE” output voltage and note it.

BBIA0529E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0461
0461

Fuel level sensor circuit 
range/performance

The output signal of the fuel level sensor does 
not change within the specified range even 
though the vehicle has been driven a long dis-
tance.

• 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

August 2012

2012 Pathfinder

P0461 FUEL LEVEL SENSOR

EC-293

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13. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12.

If NG, go to 

EC-293, "Diagnosis Procedure"

.

 WITH GST

NOTE:
Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30   (7-7/8 US gal, 6-5/8

Imp gal) in advance.

1. Prepare a fuel container and a spare hose.

2. Release fuel pressure from fuel line. Refer to 

EC-487, "Fuel Pressure Check"

.

3. Remove the fuel feed hose on the fuel level sensor unit.

4. Connect a spare fuel hose where the fuel feed hose was removed.

5. Turn ignition switch ON.
6. Drain fuel by 30   (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.

7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30   (7-7/8 US gal, 6-5/8 Imp gal).

9. Confirm that the fuel gauge indication varies.

10. If NG, go to 

EC-293, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358206

1.

CHECK COMBINATION METER FUNCTION

Refer to 

GI-33, "Work Flow"

.

OK or NG

OK

>> GO TO 2.

NG

>> Go to 

MWI-34, "Component Function Check"

.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

August 2012

2012 Pathfinder

EC-294

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P0462, P0463 FUEL LEVEL SENSOR

P0462, P0463 FUEL LEVEL SENSOR

Component Description

INFOID:0000000007358207

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 CAN communication line.

It consists of two parts, one is mechanical float and the other is vari-

able resistor. Fuel level sensor output voltage changes depending on

the movement of the fuel mechanical float.

On Board Diagnosis Logic

INFOID:0000000007358208

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 

EC-311, "Description"

.

DTC Confirmation Procedure

INFOID:0000000007358209

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V at ignition

switch ON.

1. Turn ignition switch ON and wait at least 5 seconds.

2. Check 1st trip DTC.

3. If 1st trip DTC is detected, go to 

EC-294, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358210

1.

CHECK COMBINATION METER FUNCTION

Refer to 

GI-33, "Work Flow"

.

OK or NG

OK

>> GO TO 2.

NG

>> Go to 

MWI-34, "Component Function Check"

.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

BBIA0529E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0462
0462

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
0463

Fuel level sensor circuit 
high input

An excessively high voltage from the sensor is 
sent to ECM.

August 2012

2012 Pathfinder

P0462, P0463 FUEL LEVEL SENSOR

EC-295

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INSPECTION END

August 2012

2012 Pathfinder

EC-296

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P0500 VSS

P0500 VSS

Description

INFOID:0000000007358211

NOTE:

•

If DTC P0500 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

•

If DTC P0500 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-311, "Description"

.

The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control

unit)” by CAN communication line. The combination meter then sends a signal to the ECM by CAN communi-

cation line.

On Board Diagnosis Logic

INFOID:0000000007358212

FAIL-SAFE MODE

When the malfunction is detected, ECM enters fail-safe mode.

DTC Confirmation Procedure

INFOID:0000000007358213

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Steps 1 and 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a

road test is expected to be easier, it is unnecessary to lift the vehicle.

 WITH CONSULT

1. Start engine (VDC switch OFF).

2. Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT. The vehicle speed on CONSULT

should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.

If NG, go to 

EC-297, "Diagnosis Procedure"

.

If OK, go to following step.

3. Select “DATA MONITOR” mode with CONSULT.

4. Warm engine up to normal operating temperature.

5. Maintain the following conditions for at least 60 consecutive seconds.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0500
0500

Vehicle speed sensor

The almost 0 km/h (0 MPH) signal from 
vehicle speed sensor is sent to ECM even 
when vehicle is being driven.

• Harness or connectors

(The CAN communication line is open or short-
ed)

• Harness or connectors

(The vehicle speed signal circuit is open or 
shorted)

• Wheel sensor
• Combination meter
• ABS actuator and electric unit (control unit) 

Detected item

Engine operating condition in fail-safe mode

Vehicle speed sensor

When the fail-safe system for vehicle speed sensor is activated, the cooling fan operates 
(High) while engine is running.

ENG SPEED

1,700 - 6,000 rpm

COOLAN TEMP/S

More than 70

°

C (158

°

F)

B/FUEL SCHDL

6.3 - 31.8 msec

August 2012

2012 Pathfinder