Nissan Frontier D40. Manual - part 363

P0131 A/F SENSOR 1

EC-143

< COMPONENT DIAGNOSIS >

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NOTE:
• Keep the accelerator pedal as steady as possible during cruising.
• If this procedure is not completed within 1 minute after restarting engine at step 4, return to step

4.

7.

Check 1st trip DTC.

8.

If 1st trip DTC is displayed, go to 

EC-143, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000005273134

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws on the body. Refer to 

EC-90, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect A/F sensor 1 harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-III or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

B/FUEL SCHDL

1.5 - 9.0 msec

Shift lever

Suitable position

BBIA0614E

BBIA0617E

Voltage: Battery voltage

PBIB1683E

EC-144

< COMPONENT DIAGNOSIS >

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P0131 A/F SENSOR 1

• Harness connectors E2, F32
• IPDM E/R harness connector E119
• 15A fuse (No.54)
• Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

4.

CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between the following terminals. Refer to Wiring Diagram.

4.

Check harness continuity between ECM terminals 16, 35, 56, 75 or A/F sensor 1 terminals 1, 2, 5, 6 and
ground. Refer to Wiring Diagram.

5.

Also check harness for short to power.

OK or NG

OK

>> GO TO 5.

NG

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

5.

CHECK INTERMITTENT INCIDENT

Perform 

GI-46, "Intermittent Incident"

.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace.

6.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace air fuel ratio (A/F) sensor 1.

CAUTION:

• Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m

(19.7 in) onto a hard surface such as a concrete floor; use a new one.

• Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen

Sensor Thread Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize
lubricant (commercial service tool).

>> INSPECTION END

A/F sensor 1 terminal

ECM terminal

1

16

2

75

5

35

6

56

Continuity should exist.

Continuity should not exist.

P0132 A/F SENSOR 1

EC-145

< COMPONENT DIAGNOSIS >

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P0132 A/F SENSOR 1

Component Description

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The A/F sensor 1 is a planar dual-cell limit current sensor. The sen-
sor element of the A/F sensor 1 is the combination of a Nernst con-
centration cell (sensor cell) with an oxygen-pump cell, which
transports ions. It has a heater in the element.
The sensor is capable of precise measurement   = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide   range (0.7 <

 < air).

The exhaust gas components diffuse through the diffusion gap at the
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance.

An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at   = 1. Therefore, the A/F sensor 1 is able to
indicate air-fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800

°

C (1,292 - 1,472

°

F).

On Board Diagnosis Logic

INFOID:0000000005273136

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/
F) sensor 1 signal is not inordinately high.

DTC Confirmation Procedure

INFOID:0000000005273137

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

 WITH CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Select “A/F SEN1 (B1)” in “DATA MONITOR” mode with CONSULT-III.

3.

Check “A/F SEN1 (B1)” indication.
If the indication is constantly approx. 5V, go to 

EC-146, "Diagnosis Procedure"

.

If the indication is not constantly approx. 5V, go to next step.

4.

Turn ignition switch OFF, wait at least 10 seconds and then restart engine.

5.

Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.

6.

Maintain the following conditions for about 20 consecutive seconds.

SEF579Z

SEF580Z

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible Cause

P0132
0132

Air fuel ratio (A/F) sensor 
1 circuit high voltage

• The A/F signal computed by ECM from the A/F 

sensor 1 signal is constantly approx. 5V.

• Harness or connectors

(A/F sensor 1 circuit is open or shorted.)

• Air fuel ratio (A/F) sensor 1

ENG SPEED

1,000 - 3,200 rpm

VHCL SPEED SE

More than 40 km/h (25 MPH)

EC-146

< COMPONENT DIAGNOSIS >

[QR25DE]

P0132 A/F SENSOR 1

NOTE:
• Keep the accelerator pedal as steady as possible during the cruising.
• If this procedure is not completed within 1 minute after restarting engine at step 4, return to step

4.

7.

Check 1st trip DTC.

8.

If 1st trip DTC is displayed, go to 

EC-146, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000005273138

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws on the body. Refer to 

EC-90, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect A/F sensor 1 harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-III or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

B/FUEL SCHDL

1.5 - 9.0 msec

Shift lever

Suitable position

BBIA0614E

BBIA0617E

Voltage: Battery voltage

PBIB1683E