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Nissan Pathfinder Owners & Service Manuals

Nissan Pathfinder: Dtc/circuit Diagnosis (P0532 A/c Refrigerant Pressure Sensor ... P064d Ecm)

Nissan Pathfinder (R53) 2022-2025 Service Manual / Engine :: Engine Control System / Vq35dd :: Dtc/circuit Diagnosis / Vq35dd / Dtc/circuit Diagnosis (P0532 A/c Refrigerant Pressure Sensor ... P064d Ecm)

P0532 A/c Refrigerant Pressure Sensor Nissan Pathfinder

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis name) 		DTC detecting condition
P0532 00

REFRIGERANT PRESS SENSOR A

(A/C refrigerant pressure sensor A circuit low) 		Diagnosis condition

  • Ignition switch ON

  • Engine running
Signal (terminal) Refrigerant pressure sensor signal
Threshold ECM detects that input signal from the refrigerant pressure sensor is out of the specified range.
Diagnosis delay time 5 seconds or more

POSSIBLE CAUSE

  • Harness or connectors

  • Refrigerant pressure sensor

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING-1

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  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 11 V or more under ignition switch OFF condition.

>>

GO TO 2.

PRECONDITIONING-2

Check the following conditions:

Ambient temperature 0°C (32°F) or more

Is the condition satisfied?

YES>>

GO TO 3.

NO>>

  1. Satisfy the condition.

  2. GO TO 3.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to Component Function Check.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Proceed to DTC Diagnosis Procedure.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and warm it up to normal operating temperature.

  2. Hold Nissan Pathfinder vehicle speed at more than 40 km/h (25 MPH) for 180 consecutive seconds.

    CAUTION:

    Always drive Nissan Pathfinder vehicle at a safe speed.

  3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO>>

INSPECTION END

DTC Diagnosis Procedure

CHECK REFRIGERANT PRESSURE SENSOR

Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace refrigerant pressure sensor.

P055f Engine Oil Pressure Nissan Pathfinder

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P055F

Engine oil pressure

(Engine oil pressure out of range) 		Diagnosis condition

  • After ECM self shut-off.

  • Engine oil temperature is more than -10 °C (14 °F).
Signal (terminal) Engine oil pressure sensor signal
Threshold When the engine oil pressure is higher than normal value at stop engine.
Diagnosis delay time 3.5 seconds

POSSIBLE CAUSE

  • Harness or connectors (Engine oil pressure sensor, engine oil temperature sensor or crankshaft position sensor circuit is open or shorted.)

  • Engine oil pressure sensor

  • Engine oil temperature sensor

  • Engine oil pressure control solenoid valve

  • Crankshaft position sensor

  • Oil pump

  • Clogging in oil line

  • Amount of engine oil

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  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.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 30 seconds.

  2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC PRIORITY

If DTC P055F is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is other DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

CHECK HARNESS CONNECTOR

  1. Disconnect following sensors harness connector and ECM harness connector.

    • Engine oil pressure sensor

    • Engine oil temperature sensor

    • Crankshaft position sensor

  2. Connect following sensors harness connector and ECM harness connector.

    • Engine oil pressure sensor

    • Engine oil temperature sensor

    • Crankshaft position sensor

  3. Perform DTC Confirmation Procedure. Refer to DTC Description.

Is DTC detected?

YES>>

GO TO 3.

NO>>

INSPECTION END

CHECK ENGINE OIL LEVEL AND LEAKAGE

  1. Turn ignition switch OFF.

  2. Check engine oil level and leakage. Refer to Inspection.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace error-detected parts.

CHECK OIL PUMP

Visually check oil pump and listen to operation sound.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

CHECK ENGINE OIL PRESSURE

With CONSULT

  1. Turn ignition switch ON.

  2. On CONSULT screen, select “ENGINE”>>“Data Monitor”.

  3. Start the engine and check that “EOP SENSOR” changes, according to engine speeds.

    Monitor item Condition Value
    EOP SENSOR

    • Engine: After warming up

    • Selector lever: P or N

    • Air conditioner switch: OFF

    • No load

    		 Idle 1.570 – 1.900 V
    2,000 rpm 1.610 – 2.120 V

Without CONSULT

Check engine oil pressure. Refer to Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Change engine oil. Refer to Draining and Refilling.

P0573 Brake Pedal Switch a Nissan Pathfinder 2025

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0573 00

Brake pedal switch A

(Brake Switch "A" Circuit High) 		Diagnosis condition

  • When a deceleration G of -0.13 G or more occurs after the Nissan Pathfinder vehicle speed exceeds 30 km/h (19 MPH).

  • When the brake normal open switch [Stop lamp switch (BCM)] is pressed.
Signal (terminal) Brake pedal position switch signal
Threshold Brake pedal position switch is released until 2 seconds have passed after the Nissan Pathfinder vehicle has stopped when the diagnosis condition is established. Malfunction is confirmed when the above condition is established 5 times.
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors

    (Brake pedal position switch circuit is close.)

  • Brake pedal position switch

FAIL-SAFE

Not applicable

CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC P0573 is displayed with DTC P0605, first perform the confirmation procedure (trouble diagnosis) for DTC P0605.

Is DTC P0605 detected?

YES>>

Perform diagnosis for P0605. Refer to Diagnosis Procedure.

NO>>

GO TO 2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  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.

TEST CONDITION:

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

>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 2 seconds.

  2. Repeat the following step 5 times.

    1. Drive the Nissan Pathfinder vehicle and accelerate to 48 km/h (30 MPH).

    2. Decelerate from 48 km/h (30 MPH) to 0 km/h (0 MPH) within 7 seconds.

    3. Stop the Nissan Pathfinder vehicle for 2 seconds or more.

    CAUTION:

    Always drive vehicle at a safe speed.

    NOTE:

    This procedure may be conducted with the drive wheels lifted in the shop or by driving the Nissan Pathfinder vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

  3. Check DTC.

Is DTC P0573 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC PRIORITY

If DTC P1572 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

CHECK OVERALL FUNCTION-1

With CONSULT

  1. Turn ignition switch ON.

  2. Select “BRAKE SW1” and “BRAKE SW2” in “DATA MONITOR” mode of “ENGINE” using CONSULT.

  3. Check “BRAKE SW1” and “BRAKE SW2” indication as per the following conditions.

    Monitor item Condition Indication
    BRAKE SW1 Brake pedal Slightly depressed OFF
    Fully released ON
    BRAKE SW2 Brake pedal Slightly depressed ON
    Fully released OFF

Without CONSULT

  1. Turn ignition switch ON.

  2. Check the voltage between ECM harness connector terminals as per the following.

    ECM Condition

    Voltage

    (Approx.)
    Connector + –
    Terminal
    E32 192 204 Brake pedal Slightly depressed 0 V
    Fully released Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 4.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect stop lamp switch harness connector.

  3. Check the voltage between stop lamp switch harness connector and ground.

    + − Voltage
    Stop lamp switch
    Connector Terminal
    E38 1 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Perform the trouble diagnosis for power supply circuit.

CHECK STOP LAMP SWITCH

Check the stop lamp switch. Refer toComponent Inspection .

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace stop lamp switch. Refer to Exploded View.

CHECK STOP LAMP SWITCH SIGNAL CIRCUIT

  1. Disconnect BCM harness connector.

  2. Check the continuity between stop lamp switch harness connector and ECM harness connector.

    + − Continuity
    Stop lamp switch BCM
    Connector Terminal Connector Terminal
    E38 2 M80 110 Existed

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

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

GO TO 6.

REPLACE ECM

Replace ECM. Refer to Removal and Installation.

>>

INSPECTION END

P059f Active Grille Shutter Nissan Pathfinder 2025

DTC Description

DTC DETECTION LOGIC

Active grille shutter normally stops within zone which is defined by zone (90°±10°).

If the active grille shutter stops within zone stuck error is detected, and if the active grille shutter stops at position beyond zone overrun error is detected.

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P059F 00

ACTIVE GRILLE AIR SHUTTER A

(Active grille air shutter A performance/stuck off) 		Diagnosis condition —
Signal (terminal) Active grille shutter communication signal
Threshold Detects the malfunction of initial position learning or operational malfunctions for specified times.
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors

    (Active grille shutter circuit is open or shorted.)

  • Active grille shutter

  • Foreign objects interferes with active grille shutter

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

CHECK DTC PRIORITY

If DTC P059F is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

PERFORM DIAGNOSIS PROCEDURE

NOTE:

Since this DTC is difficult to be confirmed, perform diagnosis procedure to judge the normality.

>>

Refer to DTC Diagnosis Procedure.

DTC Diagnosis Procedure

CHECK DTC PRIORITY

If DTC P059F is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

CHECK ACTIVE GRILL SHUTTER

  1. Turn ignition switch OFF.

  2. Check if any foreign objects interferes with active grille shutter.

  3. Check the installation condition of active grille shutter.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace the error-detected parts.

CHECK ACTIVE GRILLE SHUTTER POWER SUPPLY

  1. Disconnect active grille shutter harness connector.

  2. Check the voltage between active grille shutter harness connector and ground as follows.

    + − Condition

    Voltage

    (Approx.)
    Active grille shutter
    Connector Terminal
    E202 1 Ground Ignition switch: ON Battery voltage
    Ignition switch: OFF 0 V

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 4.

CHECK ACTIVE GRILLE SHUTTER POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF

  2. Disconnect IPDM E/R harness connector.

  3. Check the continuity between active grille shutter harness connector and IPDM E/R harness connector.

    Active grille shutter IPDM E/R Continuity
    Connector Terminal Connector Terminal
    E202 1 E120 8 Existed

Is the inspection result normal?

YES>>

Perform trouble diagnosis for power supply circuit.

NO>>

Repair or replace the error-detected parts.

CHECK ACTIVE GRILLE SHUTTER GROUND CIRCUIT

  1. Turn ignition switch OFF

  2. Check the continuity between active grille shutter harness connector and ground.

    Active grille shutter − Continuity
    Connector Terminal
    E202 4 Ground Existed

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

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

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

CHECK ACTIVE GRILLE SHUTTER INPUT SIGNAL CIRCUIT

  1. Disconnect ECM harness connector.

  2. Check the continuity between ECM harness connector and active grille shutter harness connector.

+ – Continuity
ECM Active grille shutter
Connector Terminal Connector Terminal
F79 167 E202 3 Existed

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair or replace the error-detected parts.

CHECK ACTIVE GRILLE SHUTTER

Check active grille shutter. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace active grille shutter. Refer to Removal and Installation.

P0606 Ecm Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0606 00

CONTROL MODULE

(Control module processor) 		Diagnosis condition —
Signal (terminal) —
Threshold Malfunction in ECM processor
Diagnosis delay time —

POSSIBLE CAUSE

ECM

FAIL-SAFE

Fail safe mode Nissan Pathfinder Vehicle behavior
Device fix mode

  • Fixes electric intake valve timing control motor in the reference position.

  • Fixes exhaust valve timing control solenoid valve in the reference position.
Electric throttle control cancel mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.

DTC Confirmation Procedure

PRECONDITIONING

  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 11 V or more with ignition switch ON.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE-I

  1. Turn ignition switch ON (engine stopped) and wait at least 10 seconds.

    CAUTION:

    Never start engine during this procedure.

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

  3. Turn ignition switch ON.

  4. Check 1st trip DTC.

Is DTC P0606 detected?

YES>>

Proceed to Diagnosis Procedure.

NO>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE-II

  1. Start engine.

  2. Rev up the engine quickly to approximately 3,000 rpm under unloaded condition and completely release the accelerator pedal.

  3. Let the engine idle and wait at least 10 seconds.

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

  5. Turn ignition switch ON.

  6. Check 1st trip DTC.

Is DTC P0606 detected?

YES>>

Proceed to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON.

  2. Erase DTC.

  3. Perform DTC confirmation procedure for 3 times. Refer to DTC Description.

Is the DTC P0606 displayed again?

YES>>

Replace ECM. Refer to Removal and Installation.

NO>>

INSPECTION END

P0611 Ecm Protection Nissan Pathfinder

DTC Description

This DTC is detected when the ECM protective function is activated due to an extreme temperature increase in ECM, resulting from severe conditions such as heavy load driving.

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0611 00

FIC MODULE

(Fuel Injector Control Module Performance) 		Diagnosis condition —
Signal (terminal) —
Threshold ECM overheat protection control is activated
Diagnosis delay time —

POSSIBLE CAUSE

ECM overheating

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

This DTC is displayed as protection function history. If no malfunction is detected after the diagnosis, the customer must be informed of the activation of the protection function.

>>

Refer to DTC Diagnosis Procedure.

DTC Diagnosis Procedure

INSPECTION START

  1. Perform DTC P0605 confirmation procedure. Refer to DTC Description.

  2. Check 1st trip DTC.

Is the 1st trip DTC P0605 detected?

YES>>

Refer to DTC Description.

NO>>

Explain the customer about the activation of the protection function.

P062b Ecm Nissan Pathfinder 2022

DTC Description

When the malfunction occurs in the fuel injector driver circuit, DTC is detected.

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P062B 00

ECM

(Internal control module fuel injector control performance) 		Diagnosis condition Engine running at idle
Signal (terminal) —
Threshold Injector driver unit is malfunctioning
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness and connectors (Injector circuit is open or shorted)

  • Battery power supply

  • ECM (injector driver unit)

  • Fuel injector relay

FAIL-SAFE

Fail safe mode Nissan Pathfinder Vehicle behavior
Traveling control mode Accelerator angle variation control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.

NOTE:

ECM does not control the accelerator pedal releasing speed.
Device fix mode

  • Fixes electric intake valve timing control motor in the reference position.

  • Fixes exhaust valve timing control solenoid valve in the reference position.
Combustion control mode Stratified charge combustion control at starting No stratified charge combustion at starting (cold start).

DTC Confirmation Procedure

PRECONDITIONING

  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 11 V or more at idle.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Start the engine and keep the engine speed at idle for 30 seconds.

  2. Check 1st trip DTC.

Is DTC P062B detected?

YES>>

Proceed to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK FUEL INJECTOR DRIVER CIRCUIT

Check ECM (Injector driver unit), relay, connector and harness for error or abnormality. Refer to Component Function Check.

Is inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON.

  2. Erase DTC.

  3. Perform DTC confirmation procedure again. Refer to DTC Description.

  4. Check 1st trip DTC.

Is the DTC P062B displayed again?

YES>>

Replace ECM. Refer to Removal and Installation.

NO>>

INSPECTION END

P062f Control Module Nissan Pathfinder

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P062F 00

CONTROL MODULE

(Internal control module EEPROM error) 		Diagnosis condition Ignition switch ON
Signal (terminal) —
Threshold ECM calculation is function malfunctioning
Diagnosis delay time —

POSSIBLE CAUSE

ECM

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

PRECONDITIONING

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

procedure before conducting the next test.

  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 between 11 V  or more with ignition switch ON.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 1 second.

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

  3. Repeat step 1 and 2 for 10 times.

  4. Erase DTC.

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

  6. Turn ignition switch ON.

  7. Check the DTC.

Is DTC P062F detected?

YES>>

Proceed to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

INSPECTION START

  1. Turn ignition switch ON and wait at least 1 second.

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

  3. Repeat step 1 and 2 for 10 times.

  4. Erase DTC.

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

  6. Turn ignition switch ON.

  7. Check the DTC.

Is DTC erased?

YES>>

INSPECTION END

NO>>

GO TO 2.

REPLACE ECM

  1. Replace ECM. Refer to Removal and Installation.

  2. Perform Description.

>>

INSPECTION END

P0643 Sensor Power Supply Nissan Pathfinder

DTC Description

ECM supplies a voltage of 5 V to some of the sensors systematically divided into 3 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor.

Sensor power supply 1

  • APP sensor 1

  • Crankshaft position sensor 1

  • Exhaust camshaft position sensor (bank 1)

  • Throttle position sensor

  • Mass air flow sensor

  • Intake camshaft position sensor (bank 1)

  • Engine oil pressure sensor

NOTE:

If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.

Sensor power supply 2

  • APP sensor 2

  • Intake camshaft position sensor (bank2)

  • Refrigerant pressure sensor

  • Crankshaft position sensor 2

  • Exhaust camshaft position sensor (bank 2)

  • Fuel rail pressure sensor

Sensor power supply 3

  • EVAP control system pressure sensor

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0643 00

SENSOR POWER/CIRC

(Sensor power supply 1 circuit short) 		Diagnosis condition Engine running at idle
Signal (terminal) Sensor power supply 1 signal
Threshold A voltage of power source for sensor is excessively low or high
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors

    • Crankshaft position sensor 1 is shorted.

    • Exhaust camshaft position sensor (bank 1) is shorted.

    • Throttle position sensor is shorted.

    • Mass air flow sensor is shorted.

    • Accelerator pedal position sensor 1 is shorted.

    • Intake camshaft position sensor (bank 1) is shorted.

    • Engine oil pressure sensor is shorted.

  • Crankshaft position sensor 1

  • Exhaust camshaft position sensor (bank 1)

  • Throttle position sensor

  • Mass air flow sensor

  • Accelerator pedal position sensor 1

  • Intake camshaft position sensor (bank 1)

  • Engine oil pressure sensor

FAIL-SAFE

Fail safe mode Nissan Pathfinder Vehicle behavior
Device fix mode

  • Fixes electric intake valve timing control motor in the reference position.

  • Fixes exhaust valve timing control solenoid valve in the reference position.
Electric throttle control cancel mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.

DTC Confirmation Procedure

PRECONDITIONING

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition switch ON.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 10 second.

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

  3. Repeat step 1 and 2 for 2 times.

  4. Turn ignition switch ON.

  5. Check the DTC.

Is the DTC detected?

YES>>

Proceed to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Perform trouble diagnosis for ECM power supply and ground circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace error-detected parts.

CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT

  1. Disconnect accelerator pedal position (APP) sensor harness connector.

  2. Turn ignition switch ON.

  3. Check the voltage between APP sensor harness connector and ground.

    + -

    Voltage

    (Approx.)
    APP sensor
    Connector Terminal
    E31 4 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 3.

CHECK SENSOR POWER SUPPLY CIRCUITS

Check harness for short to power and short to ground, between the following terminals.

ECM Sensor
Connector Terminal Name Connector Terminal
F78 38 Exhaust camshaft position sensor (bank 1) F43 1
39 Crankshaft position sensor 1 F11 1
40 Intake camshaft position sensor (bank 1) F113 1
41 Mass air flow sensor E64 1
42 Engine oil pressure sensor F54 3
F79 129 Electric throttle control actuator F50 5
E32 198 APP sensor 1 E31 4

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair short to ground or short to power in harness or connectors.

CHECK COMPONENTS

Check the following.

  • Crankshaft position sensor 1 (Refer to Component Inspection.)

  • Exhaust camshaft position sensor (bank1) (Refer to Component Inspection.)

  • TP sensor (Refer to Component Inspection (Throttle Position Sensor).)

  • Mass air flow sensor (Refer to Component Inspection (Mass Air Flow Sensor).)

  • Intake camshaft position sensor (bank 1) (Refer to Component Inspection.)

  • Engine oil pressure sensor (Refer to Component Inspection.)

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace malfunctioning component.

CHECK APP SENSOR

Refer to Component Inspection (Accelerator Pedal Position Sensor).

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Replace accelerator pedal assembly. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to Intermittent Incident.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON.

  2. Erase DTC.

  3. Perform DTC confirmation procedure. Refer to DTC Confirmation Procedure.

Is the 1st trip DTC P0643 displayed again?

YES>>

Replace ECM. Refer to Removal and Installation.

NO>>

INSPECTION END

P064d Ecm Nissan Pathfinder R53

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detecting condition
P064D 00

Internal control module

(Internal Control Module O2 Sensor Processor Performance Bank 1) 		Diagnosis condition -
Signal (terminal) A/F sensor 1 (bank 1) signal
Threshold ECM communication error
Diagnosis delay time 1 sec

POSSIBLE CAUSE

ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

YES>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

Start the engine.

Is DTC P064D detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

REPLACE ECM

Replace ECM. Refer to Removal and Installation.

YES>>

INSPECTION END

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Nissan Pathfinder (R53) 2022-2025 Service Manual

Dtc/circuit Diagnosis (P0532 A/c Refrigerant Pressure Sensor ... P064d Ecm)

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