Nissan Qashqai J11. Manual - part 554

EC9-372

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P2263 TC SYSTEM

P2263 TC SYSTEM

DTC Logic

INFOID:0000000010309394

DTC DETECTION LOGIC

NOTE:
If DTC P2263 is displayed with following DTC, first perform the trouble diagnosis for following DTC.
Refer to 

EC9-108, "DTC Index"

.

• P0001, P0002, P0045, P0105, P0106, P0115, P0190, P0200, P0201, P0202, P0203, P0204, P0217, P0402,

P0409, P0487, P0488, P0627, P0641 and P0651.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P2263 can not be duplicate.

>> Proceed to 

EC9-372, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010309395

1.

CHECK AIR FILTER

Check that air filter is not obstructed.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK INTAKE AIR DUCT

Check that intake air duct is not obstructed.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK EXHAUST GAS LEAK

Check exhaust gas leak.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK TURBOCHARGER BOOST SENSOR

Check the turbocharger boost sensor. Refer to 

EC9-198, "Component Inspection (Turbocharger Boost Sen-

sor)"

.

Is the inspection result normal?

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P2263

BOOST PRESSURE CIR-
CUIT
(Turbocharger/supercharg-
er boost system perfor-
mance)
• 1.DEF: SIGNAL OUT-

SIDE LOWER LIMIT

• 2.DEF: SIGNAL OUT-

SIDE UPPER LIMIT

• Differences between boost pressure 

and target value are less than -150 hPa.
(Boost pressure is too high)

• Differences between boost pressure 

and target value are more than 150 hPa.
(Boost pressure is too low)

• Harness or connectors

(Turbocharger boost sensor circuit is open 
or shorted.)

• Turbocharger boost sensor (with intake air 

temperature sensor 2)

• Vacuum air circuit
• Air filter
• Turbocharger
• Intake air leaks
• Exhaust gas leaks
• EGR  circuit
• Fuel flow actuator
• Turbocharger boost control solenoid valve

P2263 TC SYSTEM

EC9-373

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

YES

>> GO TO 5.

NO

>> Replace turbocharger boost sensor.

5.

CHECK TURBOCHARGER BOOST CONTROL SOLENOID VALVE

Check the turbocharger boost control solenoid valve. Refer to 

EC9-190, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK TURBOCHARGER

Check the turbocharger.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK EGR CIRCUIT

Check the EGR circuit.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK FUEL FLOW ACTUATOR CIRCUIT

Check fuel flow actuator circuit.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

+

-

Continuity

ECM

Fuel flow actuator

Connector

Terminal

Connector

Terminal

F82

43

F123

2

Existed

EC9-374

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P2264 WATER IN FUEL SENSOR

P2264 WATER IN FUEL SENSOR

DTC Logic

INFOID:0000000010309396

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine.

2.

Drive the vehicle at least 15 seconds at 5 km/h (3.11 MPH) or more.

CAUTION:

Always drive the vehicle at safe speed.

3.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-374, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309397

1.

PERFORM DIESEL FUEL FILTER WATER DRAINING

Perform diesel fuel filter water draining. Refer to 

FL-47, "Water Draining"

.

Water has been detected in the fuel filter?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK FUEL CONFORMITY

Check fuel conformity.
Is fuel normal?

YES

>> Replace fuel filter.

NO

>> Drain the fuel circuit and replace the fuel filter.

3.

CHECK HARNESS CONNECTOR CONNECTIONS

Check fuel heater and water level sensor harness connector connections.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK WATER LEVEL SENSOR POWER SUPPLY AND GROUND CIRCUIT

Check water level sensor power supply and ground circuit for open and short.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P2264

WATER IN DIESEL DE-
TECTOR
(Water in fuel sensor circuit)
• 1.DEF: OPEN CIRCUIT 

ON THE LINE OR PRES-
ENCE OF WATER IN 
THE DIESEL

• A signal from the detection sensor is 

sent to ECM

• ECM detects detection sensor circuit is 

open circuit.

• Harness or connectors

(Detection sensor circuit is open.)

• Water in fuel level sensor
• Fuel  filter

P2264 WATER IN FUEL SENSOR

EC9-375

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK WATER LEVEL SENSOR CIRCUIT

Check water level sensor circuit for open and short.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

+

-

Voltage

Fuel heater and water in fuel level 

sensor

Connector

Terminal

F177

2

Ground

Battery voltage

5

+

-

Continuity

ECM

Fuel heater and water level 

sensor

Connector

Terminal

Connector

Terminal

E58

24

F177

1

Existed

+

-

Continuity

Fuel heater and water level sensor

Connector

Terminal

F177

3

Ground

Existed

4