Nissan Qashqai (2007-2010). Manual - part 453

P0100 MAF SENSOR

EC-1331

< COMPONENT DIAGNOSIS >

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P0100 MAF SENSOR

Description

INFOID:0000000001115154

The mass air flow sensor is placed in the stream of intake air. 
• Intake air temperature sensor (1)

DTC Logic

INFOID:0000000001115061

DTC DETECTION LOGIC

NOTE:
• If DTC P0100 is displayed with DTC P0641, first perform trouble diagnosis for DTC P0641. Refer to

EC-1393, "DTC Logic"

.

• Conditions for applying the diagnostic procedure to the stored DTCs:

The DTC is declared present after the ignition has been switched on.

Diagnosis Procedure

INFOID:0000000001089002

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E17. Refer to Ground inspection in 

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK MASS AIR FLOW SENSOR POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow sensor harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between mass air flow sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness for open or short between IPDM E/R and mass air flow sensor

MBIB1523E

DTC No.

Trouble diagnosis name

Possible cause

P0100

MASS AIR FLOW SENSOR CIRCUIT
• CC.0: Short circuit to ground
• CO.1: Open circuit or short circuit to +12V

• Harness or connectors

(Mass air flow sensor circuit is open or 
shorted.)

• Mass air flow sensor

Mass air flow sensor

Ground

Voltage

Connector

Terminal

E15

4

Ground

Battery voltage

EC-1332

< COMPONENT DIAGNOSIS >

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P0100 MAF SENSOR

• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK MASS AIR FLOW SENSOR POWER SUPPLY CIRCUIT-II

Check the voltage between mass air flow sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E7, F121
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK MASS AIR FLOW SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between mass air flow sensor harness connector and ECM harness connector.

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E6, F123
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK MASS AIR FLOW SENSOR NPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between mass air flow sensor harness connector and ECM harness connector.

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E7, F121
• Harness for open or short between ECM and mass air flow sensor

Mass air flow sensor

Ground

Voltage

Connector

Terminal

E15

5

Ground

Approx. 5V

Mass air flow sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

2

F85

30

Existed

Mass air flow sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

6

F85

35

Existed

P0100 MAF SENSOR

EC-1333

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>> Repair open circuit or short to ground or short to power in harness or connectors.

10.

CHECK MASS AIR FLOW SENSOR 

Refer to 

EC-1364, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Replace mass air flow sensor.

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001089000

1.

CHECK MASS AIR FLOW SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Turn ignition switch ON.

4.

Check the voltage between mass air flow sensor harness connector.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow sensor.

Mass air flow sensor

Voltage

Connector

Terminal

E15

2

(Mass air flow sensor 

ground)

6

(Mass air flow sensor sig-

nal)

0.3 - 0.7V

EC-1334

< COMPONENT DIAGNOSIS >

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P0101 MAF SENSOR

P0101 MAF SENSOR

Description

INFOID:0000000001115261

The mass air flow sensor is placed in the stream of intake air. 
• Intake air temperature sensor (1)

DTC Logic

INFOID:0000000001115063

DTC DETECTION LOGIC

NOTE:
• If DTC P0101 is displayed with DTC P0641, first perform trouble diagnosis for DTC P0641. Refer to

EC-1393, "DTC Logic"

.

Diagnosis Procedure

INFOID:0000000000953547

1.

CHECK AIR FILTER

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

Yes

>> Repair or replace.

No

>> GO TO 2.

2.

CHECK INTAKE AIR DUCT

Check that intake air duct is not obstructed.

Is the inspection result normal?

Yes

>> Repair or replace.

No

>> GO TO 3.

3.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E17. Refer to Ground inspection in 

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace ground connection.

4.

CHECK MASS AIR FLOW SENSOR POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow sensor harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between mass air flow sensor harness connector and ground.

MBIB1523E

DTC No.

Trouble diagnosis name

Possible cause

P0101

REQUESTED AIR FLOW
• 1.DEF: Signal outside lower level
• 2.DEF: Signal outside upper level

• Harness or connectors

(The sensor circuit is open or shorted.)

• Mass air flow sensor
• Intake air leaks
• Intake air duct obstructed
• Air filter obstructed