Nissan Pathfinder: Dtc/circuit Diagnosis (P2783-00 Torque Convereter Temperature ... U0300-00 Can Communication Data)

• P2783-00 Torque Convereter Temperature
• P2784-00 Input Speed Sensor A/b
• P2793-00 Gear Shift Direction
• P27b4-00 Control Module
• P2871-00 Clutch a
• P2879-00 Clutch B
• U007a-00 Control Module Comm Bus H Off
• U0140-00 Lost Communication (bcm)
• U0300-00 Can Communication Data

P2783-00 Torque Convereter Temperature Nissan Pathfinder 5th Gen

DTC Description

DTC DETECTION LOGIC

DTC No.		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P2783	00	TORQUE CONVERTER TEMP (Torque Converter Temperature Too High)	Diagnosis condition	Ignition is switched on
			Signal	—
			Threshold	Torque converter fluid temperature is more than the specified value
			Diagnosis delay time	2 seconds or moer

POSSIBLE CAUSE

• Cooling system

• Transaxle assembly

FAIL-SAFE

High oil temperature warning

DTC Confirmation Procedure

CAUTION:

Always drive vehicle at a safe speed.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Start the engine.

2. Drive the Nissan Pathfinder vehicle for a few minutes under the following conditions.

   Selector lever: D position

3. Stop the Nissan Pathfinder vehicle.

4. Check DTC.

Is 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 DTC (TRANSMISSION)

With CONSULT

1. Ignition switch ON.

2. Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is DTC other than P2783-00 detected?

YES>>

Check DTC detected item. Refer to DTC Index.

NO>>

GO TO 2.

CHECK A/T COOLING SYSTEM

Check the A/T cooling system for obstruction/damage/blockage.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace damaged part.

CHECK A/T FLUID

Check A/T fluid level and condition. Refer to Inspection.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

1. If A/T fluid is leaking, repair damaged part. Refer to Inspection.

2. Refill or replace A/T fluid. Refer to Adjustment or Replacement.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase DTC of "TRANSMISSION".

2. Ignition switch OFF and wait for at least 15 seconds.

3. Ignition switch ON.

4. Perform DTC Confirmation Procedure.

Is DTC detected?

YES>>

Replace transaxle assembly. Refer to Removal and Installation.

NO>>

INSPECTION END

P2784-00 Input Speed Sensor A/b Nissan Pathfinder 2022

DTC Description

DTC DETECTION LOGIC

DTC No.		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P2784	00	INPUT SPED SEN A/B CORRELATION (Input/Turbine Speed Sensor "A"/"B" Correlation)	Diagnosis condition	Ignition is switched on
			Signal	—
			Threshold	Either a electrical or rationality error was detected on the input speed sensor and the engine speed signal is abnormal
			Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

• ECM

• TCM

FAIL-SAFE

• Shifting is locked

  • While driving: Keeps the gear position when an abnormality is detected

  • When the Nissan Pathfinder vehicle is stopped: Locks in 4th gear position

• Manual mode is prohibited

• Stop/start system is prohibited (if equipped)

• Neutral hold mode is prohibited (if equipped)

DTC Confirmation Procedure

CAUTION:

Always drive vehicle at a safe speed.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Start the engine.

2. Drive the Nissan Pathfinder vehicle for a few minutes under the following conditions.

   Shift position: D position

3. Stop the Nissan Pathfinder vehicle.

4. Check DTC.

Is 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 DTC (ENGINE)

With CONSULT

1. Ignition switch ON.

2. Perform “Self Diagnostic Results” in “ENGINE”.

Is any DTC detected?

YES>>

Check DTC detected item. Refer to DTC Index.

NO>>

GO TO 2.

CHECK A/T COOLING SYSTEM

Replace TCM. Refer to Removal and Installation.

Is the inspection result normal?

>>

WORK END

P2793-00 Gear Shift Direction Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P2793	00	GEAR SHIFT DIRECTION (Gear Shift Direction Circuit)	1	Diagnosis condition	Engine running Shift position: D
				Signal	—
				Threshold	The DTC is detected if any of the following conditions is met: A clutch combination for reverse gear is activated The engine torque is higher than a calibratable threshold while gear engagement via the clutch B, brake C and brake D is active
				Diagnosis delay time	2 seconds or more
			2	Diagnosis condition	Engine running Shift position: R
				Signal	—
				Threshold	A clutch combination different from reverse gear is detected
				Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

TCM

FAIL-SAFE

• Unable driving

• Manual mode is prohibited

• Stop/start system is prohibited (if equipped)

• Neutral hold mode is prohibited (if equipped)

DTC Confirmation Procedure

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Start the engine.

2. Depress the brake pedal.

3. Shift to the D position and wait for at least 5 seconds.

4. Shift to the R position and wait for at least 5 seconds.

5. Press the P position switch.

6. Check DTC.

Is 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

REPLACE TCM

Replace TCM. Refer to Removal and Installation.

>>

WORK END

P27b4-00 Control Module Nissan Pathfinder 2025

DTC Description

DTC DETECTION LOGIC

DTC No.		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P27B4	00	GEAR DIRECTION CONTROL (Input/Turbine Shaft Speed Sensor "A" Circuit)	1	Diagnosis condition	While driving
				Signal	—
				Threshold	The DTC is detected if any of the following conditions is met: The transmission direction is changed while Nissan Pathfinder vehicle speed is more than the specified value or the vehicle speed status is abnormal The transmission direction is reverse and the Nissan Pathfinder vehicle speed is more than the specified value or the vehicle speed signal status is abnormal
				Diagnosis delay time	2 seconds or more
			2	Diagnosis condition	While driving
				Signal	—
				Threshold	The DTC is detected if any of the following conditions is met: A forward gear is engaged and the transmission input direction speed and the transmission output speed direction are not equal A reverse gear is engaged and the transmission input direction speed and the transmission output speed direction are equal
				Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

Dual speed sensor

FAIL-SAFE

Not changed from normal driving

DTC Confirmation Procedure

CAUTION:

Always drive vehicle at a safe speed.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Start the engine.

2. Drive the Nissan Pathfinder vehicle at 80 km/h (50 MPH) for at least 5 seconds.

3. Check DTC.

Is 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 DTC (TRANSMISSION)

With CONSULT

1. Ignition switch ON.

2. Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is DTC other than P27B4-00 detected?

YES>>

Check DTC detected item. Refer to DTC Index.

NO>>

Replace transaxle assembly. Refer to Removal and Installation.

P2871-00 Clutch a Nissan Pathfinder 2022

DTC Description

DTC DETECTION LOGIC

DTC No.		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P2871	00	CLUTCH A STUCK DISENGAGED (Clutch "A" Performance/Stuck Disengaged)	1	Diagnosis condition	While driving
				Signal	—
				Threshold	The DTC is detected if any of the following conditions is met: Symptom counter for dog clutch A not engaging in down shift is more than the specified number of times Symptom counter for dog clutch A not engaging during gear engagement is more than the specified number of times Symptom counter for ratcheting while gear engagement of dog clutch A is more than the specified number of times Symptom counter for ratcheting while down shift with dog clutch A engagement is more than the specified number of times
				Diagnosis delay time	2 second or more
			2	Diagnosis condition	Engine running
				Signal	—
				Threshold	The dog clutch position during engine start by stop/start system is abnormal
				Diagnosis delay time	20 seconds

POSSIBLE CAUSE

• A/T fluid level

• Dog clutch A position sensor

• Dog clutch A

• Transaxle assembly

FAIL-SAFE

• Shifting is locked (Locks in 4th gear)

• Manual mode is prohibited

• Stop/start system is prohibited (if equipped)

DTC Confirmation Procedure

CAUTION:

Always drive vehicle at a safe speed.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION (PART 1)

1. Start the engine.

2. Shift the transmission position according to the following.

   D → N → D

3. Repeat step 2 3 times.

4. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO>>

GO TO 3.

PERFORM DTC DETECTION (PART 2)

1. Drive the Nissan Pathfinder vehicle under the following conditions.

   Gear position: 7th → 8th → 7th

2. Repeat step 1 2 times.

3. Check DTC.

Is DTC detected?

YES>>

Proceed to Diagnosis Procedure.

NO>>

GO TO 4.

PERFORM DTC DETECTION (PART 3)

1. Stop the engine by stop/start system. Refer to System Description.

2. Restart the engine and wait for at least 25 seconds.

3. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK DTC (TRANSMISSION)

With CONSULT

1. Ignition switch ON.

2. Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is DTC other than P2871-00 detected?

YES>>

Check DTC detected item. Refer to DTC Index.

NO>>

GO TO 2.

CHECK A/T FLUID

Check A/T fluid level and condition. Refer to Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

1. If A/T fluid is leaking, repair damaged part. Refer to Inspection.

2. Refill or replace A/T fluid. Refer to Adjustment or Replacement.

REPLACE DOG CLUTCH A POSITION SENSOR

Replace dog clutch A position sensor. Refer to Removal and Installation.

>>

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC confirmation procedure. Refer to DTC Description.

Is DTC detected?

YES>>

Replace transaxle assembly. Refer to Removal and Installation.

NO>>

INSPECTION END

P2879-00 Clutch B Nissan Pathfinder 2022

DTC Description

DTC DETECTION LOGIC

DTC No.		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P2879	00	CLUTCH B STUCK DISENGAGED (Clutch "B" Performance/Stuck Disengaged)	Diagnosis condition	While driving
			Signal	—
			Threshold	The DTC is detected if any of the following conditions is met: Symptom counter for dog clutch F not engaging in down shift is more than the specified number of times Symptom counter for dog clutch F not engaging during gear engagement is more than the specified number of times Symptom counter for ratcheting while gear engagement of dog clutch F is more than the specified number of times Symptom counter for ratcheting while down shift with dog clutch F engagement is more than the specified number of times
			Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

• A/T fluid level

• Dog clutch F position sensor

• Dog clutch F

• Transaxle assembly

FAIL-SAFE

• Shifting is limited (Shifting between the gears of 5 - 6 - 7 - 8 - 9 can be performed)

• Manual mode is prohibited

• Stop/start system is prohibited (if equipped)

DTC Confirmation Procedure

Always drive vehicle at a safe speed.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Start the engine.

2. Drive the Nissan Pathfinder vehicle under the following conditions.

   Gear position: 4th → 5th → 4th

3. Repeat step 1 2 times.

4. Check DTC.

Is 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 DTC (TRANSMISSION)

With CONSULT

1. Ignition switch ON.

2. Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is DTC other than P2879-00 detected?

YES>>

Check DTC detected item. Refer to DTC Index.

NO>>

GO TO 2.

CHECK A/T FLUID

Check A/T fluid level and condition. Refer to Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

1. If A/T fluid is leaking, repair damaged part. Refer to Inspection.

2. Refill or replace A/T fluid. Refer to Adjustment or Replacement.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase DTC of "TRANSMISSION".

2. Ignition switch OFF and wait for at least 15 seconds.

3. Ignition switch ON.

4. Perform DTC Confirmation Procedure.

Is DTC detected?

YES>>

Replace transaxle assembly. Refer to Removal and Installation.

NO>>

INSPECTION END

U007a-00 Control Module Comm Bus H Off Nissan Pathfinder

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
U007A	00	Control module comm Bus H Off (Control Module Communication Bus "H" Off)	Diagnosis condition	Ignition is switched on
			Signal	CAN communication signal
			Threshold	Bus state: Buss off
			Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

• Harness or connector (CAN communication line is error)

• All control units at network

FAIL-SAFE

• Shifting is locked

  • While driving: Keeps the gear position when an abnormality is detected

  • When the Nissan Pathfinder vehicle is stopped: Locks in 4th gear position

• Manual mode is prohibited

• Stop/start system is prohibited (if equipped)

• Neutral hold mode is prohibited (if equipped)

DTC CONFIRMATION PROCEDURE

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Ignition switch ON and wait for at least 5 seconds.

2. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to Trouble Diagnosis Flow Chart.

U0140-00 Lost Communication (bcm) Nissan Pathfinder 5th Gen

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
U0140	00	LOST COMM (BCM) (Lost Communication With Body Control Module)	Diagnosis condition	Ignition is switched on
			Signal	CAN communication signal
			Threshold	TCM is unable to receive the CAN communications signal from BCM
			Diagnosis delay time	5 seconds or more

POSSIBLE CAUSE

• Harness or connector (CAN communication line)

• Power supply voltage circuit or ground circuit of the BCM

• BCM

• TCM

FAIL-SAFE

• Manual mode is prohibited

• Neutral hold mode is prohibited (if equipped)

DTC Confirmation Procedure

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Ignition switch ON and wait for at least 5 seconds.

2. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to Trouble Diagnosis Flow Chart.

U0300-00 Can Communication Data Nissan Pathfinder 5th Gen

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
U0300	00	CAN COMM DATA (Internal Control Module Software Incompatibility)	Diagnosis condition	Ignition is switched on
			Signal	CAN communication signal
			Threshold	The data length transmitted from each control unit is shorter than the specified length and the status
			Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

TCM software

FAIL-SAFE

• Manual mode is prohibited

• Stop/start system is prohibited (if equipped)

DTC Confirmation Procedure

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 15 seconds, then perform the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 9 V.

>>

GO TO 2.

PERFORM DTC DETECTION

1. Ignition switch ON.

2. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

PERFORM DOG CLUTCH POSITION SENSOR CALIBRATION

Perform dog clutch position sensor calibration. Refer to Description.

>>

GO TO 2.

PERFORM LEARNING OF SOLENOID CHARACTERISTIC

Perform learning of solenoid characteristic. Refer to Description.

>>

GO TO 3.

PERFORM A/T CLUTCH TOUCH POINT LEARNING

Perform A/T clutch touch point learning. Refer to Description.

>>

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC confirmation procedure. Refer to DTC Description.

Is DTC detected?

YES>>

Replace TCM. Refer to Removal and Installation.

NO>>

INSPECTION END