P0868 Nissan

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Description

The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure to suit the driving condition in response to a signal sent from the TCM.

What is a Diagnostic Trouble Code (DTC)? Diagnostic trouble codes (or fault codes) are obd2 codes that are stored by the on-board computer diagnostic system. These are stored in response to a problem found in the car by the system. P0868 Auto Trouble Code. Parts or components should not be replaced with reference to only a P0868 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. P0868 Nissan – (ASE) Powertrain Transmission Controls Trouble Code Description: Transmission Fluid. Analysis: Possible Causes: Tech description: Nissan Vehicle:Nissan 370Z,Nissan Altima,Nissan Armada,Nissan Frontier,Nissan GT-R,Nissan Juke,Nissan Maxima,Nissan Murano,Nissan Pathfinder,Nissan Quest,Nissan Rogue,Nissan Sentra,Nissan Titan. The OBD2 Code Information Be Applicable For Nissan: 2013 Nissan Pathfinder,2013 Nissan Murano,2013 Nissan Juke Nismo,2013 Nissan GT-R,2013 Nissan Altima Sedan,2013 Nissan Almera,2013 Nissan 370Z,2012 Nissan Tiida,2012 Nissan Sunny,2012 Nissan Qashqai,2012 Nissan Murano,2012 Nissan Micra ELLE,2012 Nissan Micra DIG-S,2012 Nissan Maxima,2012 Nissan Juke Shiro,2012 Nissan GT-R,2012 Nissan.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.

Then wait at least 10 seconds before performing the next test.

1.CHECK DTC DETECTION

1. Turn ignition switch ON.

2. Select “DATA MONITOR”.

3. Make sure that output voltage of CVT fluid temperature sensor is within the range below.

ATF TEMP SEN : 1.0 – 2.0 V

If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid)

4. Start engine and maintain the following conditions for at least 10 consecutive seconds.

Is “P0868 SEC/PRESS DOWN” detected? YES >> Go to TM-169, 'Diagnosis Procedure'.

NO >> Check intermittent incident. Refer to GI-42, 'Intermittent Incident'.

Diagnosis Procedure

1.CHECK LINE PRESSURE

Perform line pressure test. Refer to TM-247, 'Inspection and Judgment'.

Is the inspection result normal? YES >> GO TO 2.

P0868

NO >> Repair or replace damaged parts. Refer to TM-247, 'Inspection and Judgment'.

2.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

1. Turn ignition switch OFF.

2. Disconnect CVT unit harness connector.

3. Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to TM-170, 'Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]'.

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace damaged parts.

3.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check pressure control solenoid valve A (line pressure solenoid valve). Refer to TM-170, 'Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]'.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace damaged parts.

4.CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYSTEM

Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to TM-160, 'DTC Logic'.

Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace damaged parts.

P0868

Nissan Code P0868 Fix

5.DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal? YES >> Replace TCM. Refer to TM-254, 'Exploded View'.

NO >> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)

1.CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check resistance between CVT unit terminal 2 and ground.

Is the inspection result normal? YES >> INSPECTION END

NO >> Replace transaxle assembly. Refer to TM-259, 'Exploded View'.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)

1.CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check resistance between CVT unit terminal 3 and ground.

Is the inspection result normal? YES >> INSPECTION END

NO >> Replace transaxle assembly. Refer to TM-259, 'Exploded View'.

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